Best Whey Protein Isolate of 2025

Last updated on 30/09/2025
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1
Optimum Nutrition Platinum Hydro Whey, Hydrolysed Whey Protein Isolate Powder with Essential Amino Acids, Glutamine and BCAA, Milk Chocolate Flavour, 40 Servings, 1.6 kg
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Optimum Nutrition Platinum Hydro Whey, Hydrolysed Whey Protein Isolate Powder with Essential Amino Acids, Glutamine and BCAA, Milk Chocolate Flavour, 40 Servings, 1.6 kg
Optimum Nutrition
6% OffFree Shipping
Why we love it
  • Supports your active fitness routine.
  • Low in sugars and fat.
  • Easy to mix formula.
Main Highlights
  • Pure hydrolysed whey protein isolate powder designed to support your strength training, CrossFit routine, gym workout, and fitness sessions
  • Each serving contains 30 g of the FASTEST DIGESTING PROTEIN for the growth and maintenance of muscle mass*
  • Carefully formulated with 9.5 g of both naturally occurring BCAAs and added amino acids
  • Hydrolysed whey protein isolates deliver the PUREST FORM OF WHEY PROTEIN with minimal amounts of fat and sugars; ONLY 1 g OF SUGARS OR LESS and no more than 0.5 g of fat per serving
  • An EASY TO MIX, the any-time protein formula that provides an extra source of protein throughout the day, in three varieties: Milk Chocolate, Super Strawberry, and Vanilla Bean
  • For a tasty protein shake add 1 scoop of the whey isolate to 260 ml of water and shake, stir, or blend well
  • *Source: Official Journal of the European Union - COMMISSION REGULATION (EU) No 432/2012
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9.7
Exceptional
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9.7
Exceptional
Optimum Nutrition
Optimum Nutrition Platinum Hydro Whey, Hydrolysed Whey Protein Isolate Powder with Essential Amino Acids, Glutamine and BCAA, Milk Chocolate Flavour, 40 Servings, 1.6 kg
6% OffFree Shipping
Why we love it
  • Supports your active fitness routine.
  • Low in sugars and fat.
  • Easy to mix formula.
Main Highlights
  • Pure hydrolysed whey protein isolate powder designed to support your strength training, CrossFit routine, gym workout, and fitness sessions
  • Each serving contains 30 g of the FASTEST DIGESTING PROTEIN for the growth and maintenance of muscle mass*
  • Carefully formulated with 9.5 g of both naturally occurring BCAAs and added amino acids
  • Hydrolysed whey protein isolates deliver the PUREST FORM OF WHEY PROTEIN with minimal amounts of fat and sugars; ONLY 1 g OF SUGARS OR LESS and no more than 0.5 g of fat per serving
  • An EASY TO MIX, the any-time protein formula that provides an extra source of protein throughout the day, in three varieties: Milk Chocolate, Super Strawberry, and Vanilla Bean
  • For a tasty protein shake add 1 scoop of the whey isolate to 260 ml of water and shake, stir, or blend well
  • *Source: Official Journal of the European Union - COMMISSION REGULATION (EU) No 432/2012
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Value for Money
2
Optimum Nutrition Gold Standard Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and Amino Acids, Vanilla Ice Cream, 76 Servings, 2.28kg, Packaging May Vary
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Optimum Nutrition Gold Standard Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and Amino Acids, Vanilla Ice Cream, 76 Servings, 2.28kg, Packaging May Vary
Optimum Nutrition
13% OffFree Shipping
Why we love it
  • Supports muscle gain and recovery.
  • Informed Choice certified formula.
  • Variety of delicious flavours.
Main Highlights
  • Optimum Nutrition’s Gold Standard 100% WHEY is the world’s best-selling protein powder* designed to support your fitness journey from day one
  • FAST-ABSORBING whey protein with whey protein isolate as the main ingredient helps with muscle gain and supports recovery* after every training session
  • The ON whey protein formula is Informed Choice certified, contains naturally-occurring BCAAs and GLUTAMINE and is LOW IN SUGAR and fat
  • Available in a VARIETY OF SIZES and FLAVOURS: double rich chocolate, banana cream, vanilla ice cream, unflavored protein powder and more
  • EASY & CONVENIENT: mix one scoop in 180-240 ml of cold water; best enjoyed in the morning or/and during the 30 minutes just before or immediately after training
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9.6
Superb
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9.6
Superb
Optimum Nutrition
Optimum Nutrition Gold Standard Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and Amino Acids, Vanilla Ice Cream, 76 Servings, 2.28kg, Packaging May Vary
13% OffFree Shipping
Why we love it
  • Supports muscle gain and recovery.
  • Informed Choice certified formula.
  • Variety of delicious flavours.
Main Highlights
  • Optimum Nutrition’s Gold Standard 100% WHEY is the world’s best-selling protein powder* designed to support your fitness journey from day one
  • FAST-ABSORBING whey protein with whey protein isolate as the main ingredient helps with muscle gain and supports recovery* after every training session
  • The ON whey protein formula is Informed Choice certified, contains naturally-occurring BCAAs and GLUTAMINE and is LOW IN SUGAR and fat
  • Available in a VARIETY OF SIZES and FLAVOURS: double rich chocolate, banana cream, vanilla ice cream, unflavored protein powder and more
  • EASY & CONVENIENT: mix one scoop in 180-240 ml of cold water; best enjoyed in the morning or/and during the 30 minutes just before or immediately after training
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3
Nutrisport Whey Protein Isolate Chocolate 5Kg
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Nutrisport Whey Protein Isolate Chocolate 5Kg
Nutrisport
Why we love it
  • Low fat and lactose-free.
  • Contains anticatabolic amino acids.
  • Easily digested, high nutritional value.
Main Highlights
  • Low fat and lactose
  • Ingredients:Cross flow microfiltered whey protein isolate (milk), flavour (nature identical), sweetener (sodium cyclamate), stabiliser, pea fibre.Highest levels of anticataboilc amino acids
  • Pure cross flow microfiltered
  • Aspartame free
  • Highest biological value and easily digested
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9.6
Superb
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9.6
Superb
Nutrisport
Nutrisport Whey Protein Isolate Chocolate 5Kg
Why we love it
  • Low fat and lactose-free.
  • Contains anticatabolic amino acids.
  • Easily digested, high nutritional value.
Main Highlights
  • Low fat and lactose
  • Ingredients:Cross flow microfiltered whey protein isolate (milk), flavour (nature identical), sweetener (sodium cyclamate), stabiliser, pea fibre.Highest levels of anticataboilc amino acids
  • Pure cross flow microfiltered
  • Aspartame free
  • Highest biological value and easily digested
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4
PBN Premium Body Nutrition - Whey Isolate Protein Powder, Chocolate - 75 Servings, 2.27 kg (Pack of 1)
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PBN Premium Body Nutrition - Whey Isolate Protein Powder, Chocolate - 75 Servings, 2.27 kg (Pack of 1)
Premium Body Nutrition
Free Shipping
Why we love it
  • High-quality Whey Protein isolate.
  • Promotes muscle growth maintenance.
  • Supports bone health.
Main Highlights
  • Chocolate - Whey Protein-ISOLATE with 87Percentage+ Protein, 2.27 kg, jar with a delicious Banana flavour
  • A jar with a delicious Banana flavour
  • Protein contributes to growth in muscle mass and to the maintenance of normal bones.
  • 1-Protein contributes to a growth in muscle mass.
  • 2-Protein contributes to the maintenance of normal bones.
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9.6
Superb
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9.6
Superb
Premium Body Nutrition
PBN Premium Body Nutrition - Whey Isolate Protein Powder, Chocolate - 75 Servings, 2.27 kg (Pack of 1)
Free Shipping
Why we love it
  • High-quality Whey Protein isolate.
  • Promotes muscle growth maintenance.
  • Supports bone health.
Main Highlights
  • Chocolate - Whey Protein-ISOLATE with 87Percentage+ Protein, 2.27 kg, jar with a delicious Banana flavour
  • A jar with a delicious Banana flavour
  • Protein contributes to growth in muscle mass and to the maintenance of normal bones.
  • 1-Protein contributes to a growth in muscle mass.
  • 2-Protein contributes to the maintenance of normal bones.
Show More
5
DY Shadowhey Isolate Whey Protein Powder 2kg (Vanilla Caramel)
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DY Shadowhey Isolate Whey Protein Powder 2kg (Vanilla Caramel)
DY Nutrition
Free Shipping
Why we love it
  • Pure, high-quality protein intake.
  • Awarded Best Protein Powder.
  • Promotes lean muscle mass.
Main Highlights
  • Pure Cold Pressed Whey Protein Isolate: DY Nutrition Shadowhey Isolate contains 25grams of 100% pure, cold-processed whey protein isolate for maximum bioavailability. Cold processing filtration helps preserve the proteins Amino acid profile, producing the highest quality protein available.
  • Why Isolate? When compared against the other whey protein types (concentrate and Hydrolysate) whey protein isolate has the highest amount of protein per serving. Whey isolate is considered to be lactose-free, carbohydrate-free, and fat-free, making it a perfect choice for performance athletes and people looking to add lean muscle mass.
  • Decades of Proven Performance: Whey protein has a legacy of effectiveness in sports research spanning decades and Shadowhey Isolate Protein Powder has been specifically designed for rapid absorption delivering an industry leading 25g of protein per 30g scoop with over 7.3g of Branch chain amino acids and all nine essential amino acids.
  • Easy Mixing, Optimal Absorption: Our DY Nutrition Shadowhey Isolate is 100% pure, sugar free, lactose free and highly bioavailable. It comes in 7 premium flavours and mixes effortlessly into your pre or post-workout shake. It's also perfect as a base for any other homemade high protein recipes such as overnight oats, pancakes and flapjacks.
  • Award Winning, Quality Assured & GMP Certified: Rest easy knowing our Shadowhey Isolate protein powder is produced to the highest quality standards and GMP certified. In fact, Shadowhey Isolate was even awarded as winner by Men's Fitness UK for the Best Protein Powder at the 2022 Nutrition awards.
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9.5
Superb
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9.5
Superb
DY Nutrition
DY Shadowhey Isolate Whey Protein Powder 2kg (Vanilla Caramel)
Free Shipping
Why we love it
  • Pure, high-quality protein intake.
  • Awarded Best Protein Powder.
  • Promotes lean muscle mass.
Main Highlights
  • Pure Cold Pressed Whey Protein Isolate: DY Nutrition Shadowhey Isolate contains 25grams of 100% pure, cold-processed whey protein isolate for maximum bioavailability. Cold processing filtration helps preserve the proteins Amino acid profile, producing the highest quality protein available.
  • Why Isolate? When compared against the other whey protein types (concentrate and Hydrolysate) whey protein isolate has the highest amount of protein per serving. Whey isolate is considered to be lactose-free, carbohydrate-free, and fat-free, making it a perfect choice for performance athletes and people looking to add lean muscle mass.
  • Decades of Proven Performance: Whey protein has a legacy of effectiveness in sports research spanning decades and Shadowhey Isolate Protein Powder has been specifically designed for rapid absorption delivering an industry leading 25g of protein per 30g scoop with over 7.3g of Branch chain amino acids and all nine essential amino acids.
  • Easy Mixing, Optimal Absorption: Our DY Nutrition Shadowhey Isolate is 100% pure, sugar free, lactose free and highly bioavailable. It comes in 7 premium flavours and mixes effortlessly into your pre or post-workout shake. It's also perfect as a base for any other homemade high protein recipes such as overnight oats, pancakes and flapjacks.
  • Award Winning, Quality Assured & GMP Certified: Rest easy knowing our Shadowhey Isolate protein powder is produced to the highest quality standards and GMP certified. In fact, Shadowhey Isolate was even awarded as winner by Men's Fitness UK for the Best Protein Powder at the 2022 Nutrition awards.
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6
Optimum Nutrition ON Gold Standard 100% Isolate Pure Whey Protein, Naturally Occurring BCAAs and Glutamine, Pre and Post Workout, Vanilla Flavour, 31 Servings, 930 g
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Optimum Nutrition ON Gold Standard 100% Isolate Pure Whey Protein, Naturally Occurring BCAAs and Glutamine, Pre and Post Workout, Vanilla Flavour, 31 Servings, 930 g
Optimum Nutrition
18% OffFree Shipping
Why we love it
  • High in quality whey protein.
  • Support muscle growth and maintenance.
  • Low in sugar and fat.
Main Highlights
  • Gold Standard whey protein powder contains 25g (83 percent) of high quality 100 percent pure whey isolate protein blend per serving to suport lean muscle gain*
  • Whey protein isolate is ultra-filtered for exceptional purity; it supports the growth and maintenance of muscle mass and the maintenance of normal bones*
  • Informed Choice certified ON whey protein powder contains low sugar (0.3 g), low fat (0.4 g) and 5.5 g of naturally occurring essential amino acids, BCAAs, per serving
  • This high protein powder is perfect as a protein shake, pre workout and post workout for both men and women; comes in vanilla, chocolate and strawberry flavours
  • To create perfect protein drinks, add 30 g (1 rounded scoop) to 200 ml of cold water and mix well
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9.3
Superb
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9.3
Superb
Optimum Nutrition
Optimum Nutrition ON Gold Standard 100% Isolate Pure Whey Protein, Naturally Occurring BCAAs and Glutamine, Pre and Post Workout, Vanilla Flavour, 31 Servings, 930 g
18% OffFree Shipping
Why we love it
  • High in quality whey protein.
  • Support muscle growth and maintenance.
  • Low in sugar and fat.
Main Highlights
  • Gold Standard whey protein powder contains 25g (83 percent) of high quality 100 percent pure whey isolate protein blend per serving to suport lean muscle gain*
  • Whey protein isolate is ultra-filtered for exceptional purity; it supports the growth and maintenance of muscle mass and the maintenance of normal bones*
  • Informed Choice certified ON whey protein powder contains low sugar (0.3 g), low fat (0.4 g) and 5.5 g of naturally occurring essential amino acids, BCAAs, per serving
  • This high protein powder is perfect as a protein shake, pre workout and post workout for both men and women; comes in vanilla, chocolate and strawberry flavours
  • To create perfect protein drinks, add 30 g (1 rounded scoop) to 200 ml of cold water and mix well
Show More
7
PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g
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PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g
PINK SUN
Why we love it
  • Premium quality ensures exceptional results.
  • Suitable for many diets.
  • Ultra-filtered for pure protein.
Main Highlights
  • Premium quality, SOY FREE, undenatured whey protein isolate powder 1kg
  • From grass-fed hormone-free cows' milk with 92% protein
  • Ultra-filtered to remove carbohydrate, fat and lactose
  • Unflavoured natural taste - no added sugar or artificial sweeteners
  • Gluten free, suitable for vegetarian and wholefood diets
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9.1
Superb
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9.1
Superb
PINK SUN
PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g
Why we love it
  • Premium quality ensures exceptional results.
  • Suitable for many diets.
  • Ultra-filtered for pure protein.
Main Highlights
  • Premium quality, SOY FREE, undenatured whey protein isolate powder 1kg
  • From grass-fed hormone-free cows' milk with 92% protein
  • Ultra-filtered to remove carbohydrate, fat and lactose
  • Unflavoured natural taste - no added sugar or artificial sweeteners
  • Gluten free, suitable for vegetarian and wholefood diets
Show More
8
Impact Whey Isolate Protein Powder, Natural Chocolate
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Impact Whey Isolate Protein Powder, Natural Chocolate
Myprotein
4% OffFree Shipping
Why we love it
  • Great for muscle growth upkeep.
  • Impressively low in fat, carbs.
  • Packed with 90% protein ratio.
Main Highlights
  • One of the purest whey protein powder
  • Made from milk from pasture cows
  • Helps to build and repair new muscle
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9.0
Superb
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9.0
Superb
Myprotein
Impact Whey Isolate Protein Powder, Natural Chocolate
4% OffFree Shipping
Why we love it
  • Great for muscle growth upkeep.
  • Impressively low in fat, carbs.
  • Packed with 90% protein ratio.
Main Highlights
  • One of the purest whey protein powder
  • Made from milk from pasture cows
  • Helps to build and repair new muscle
Show More
9
PBN - Premium Body Nutrition - Whey-Isolate Protein Powder, 1kg, Chocolate - 33 Servings
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PBN - Premium Body Nutrition - Whey-Isolate Protein Powder, 1kg, Chocolate - 33 Servings
Premium Body Nutrition
Free Shipping
Why we love it
  • Packed with protein per serving.
  • Vegetarian-friendly premium quality ingredients.
  • Offers thirty-three generous servings.
Main Highlights
  • PBN Whey Protein Isolate Chocolate 1kg Pouch
  • Each serving contains 26g of Protein
  • Premium Quality Ingredients
  • Suitable for Vegetarians
  • Each Pack contains 33 Servings
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8.8
Excellent
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8.8
Excellent
Premium Body Nutrition
PBN - Premium Body Nutrition - Whey-Isolate Protein Powder, 1kg, Chocolate - 33 Servings
Free Shipping
Why we love it
  • Packed with protein per serving.
  • Vegetarian-friendly premium quality ingredients.
  • Offers thirty-three generous servings.
Main Highlights
  • PBN Whey Protein Isolate Chocolate 1kg Pouch
  • Each serving contains 26g of Protein
  • Premium Quality Ingredients
  • Suitable for Vegetarians
  • Each Pack contains 33 Servings
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10
Myprotein Clear Whey Protein Isolate Powder - Peach Tea - 488g - 20 Servings - Cool and Refreshing Whey Protein Shake Alternative - 20g Protein and 4g BCAA per Serving
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Myprotein Clear Whey Protein Isolate Powder - Peach Tea - 488g - 20 Servings - Cool and Refreshing Whey Protein Shake Alternative - 20g Protein and 4g BCAA per Serving
Myprotein
29% OffFree Shipping
Why we love it
  • Light and refreshing protein supplement.
  • Packed with 20g protein, BCAAs, glutamine.
  • Informed Choice certified quality.
Main Highlights
  • Light and refreshing. Ideal product in the protein supplements category for warmer weather due to the juice-like flavour and consistency - no milky taste or texture
  • Fruity flavours mean the product tastes great, but it also contains 20g of protein per serving, along with 4,5g BCAAs and 3g of glutamine; making this one of the most complete clear whey drinks around
  • Clear Whey Isolate is not just another protein shake. With high-quality hydrolysed whey protein isolate and a light and refreshing alternative — this is more like juice than a milky protein shake.
  • Clear Whey from Myprotein is Informed Choice certified. With Informed Choice, you can feel confidentthat ourClear Whey Isolateis manufactured to the highest standards.
  • With just 0.1g of fat, 0.3g of sugar, and less than 90 calories per shake, it’s the perfect way to stay hydrated throughout the day — without undoing all of your hard work.
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8.8
Excellent
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8.8
Excellent
Myprotein
Myprotein Clear Whey Protein Isolate Powder - Peach Tea - 488g - 20 Servings - Cool and Refreshing Whey Protein Shake Alternative - 20g Protein and 4g BCAA per Serving
29% OffFree Shipping
Why we love it
  • Light and refreshing protein supplement.
  • Packed with 20g protein, BCAAs, glutamine.
  • Informed Choice certified quality.
Main Highlights
  • Light and refreshing. Ideal product in the protein supplements category for warmer weather due to the juice-like flavour and consistency - no milky taste or texture
  • Fruity flavours mean the product tastes great, but it also contains 20g of protein per serving, along with 4,5g BCAAs and 3g of glutamine; making this one of the most complete clear whey drinks around
  • Clear Whey Isolate is not just another protein shake. With high-quality hydrolysed whey protein isolate and a light and refreshing alternative — this is more like juice than a milky protein shake.
  • Clear Whey from Myprotein is Informed Choice certified. With Informed Choice, you can feel confidentthat ourClear Whey Isolateis manufactured to the highest standards.
  • With just 0.1g of fat, 0.3g of sugar, and less than 90 calories per shake, it’s the perfect way to stay hydrated throughout the day — without undoing all of your hard work.
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We scanned 213 products

We reviewed these offers relevant to the Whey Protein Isolate within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Optimum Nutrition, Nutrisport, Premium Body Nutrition, DY Nutrition, PINK SUN, Myprotein, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.
For the best Whey Protein Isolate in the market, we considered we took a deep dive into 1066 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that: