Head-to-head comparison updated for 2026. See which protein product comes out on top.
| Attribute | ||
|---|---|---|
| Brand | BulkSupplements | MyProtein |
| Protein / serving | 27gBest | 21g |
| Calories / serving | 110 | 103Best |
| Fat / serving | 0gBest | 1.9g |
| Carbs / serving | 1gBest | 1g |
| Sugar / serving | 0gBest | 1g |
| Price / serving | $0.82 | $0.45Best |
| Price / gram protein | $0.0303 | $0.0214Best |
| Overall score | 84/100Best | 78/100 |
| Value score | 90/100 | 95/100Best |
| Purity score | 93/100Best | 78/100 |
| Protein source | Whey Isolate | Whey Concentrate |
| Sweetener | none | sucralose |
| Certifications | GMP Certified | None |
| Dietary tags | Gluten-Free, Soy-Free | Gluten-Free |
| Third-party tested | Yes | No |
| Buy on Amazon | Buy on Amazon |
BulkSupplements Whey Protein Isolate 90% is the value champion of the whey isolate category. At just $26.96 for 33 servings, it delivers 27g of protein per 30g scoop — a remarkable 90% protein-by-weight ratio that rivals the most expensive isolates on the market. The single-ingredient formula contains nothing but whey protein isolate: no sweeteners, flavors, colors, or fillers.
MyProtein Impact Whey Protein is the go-to choice for anyone seeking maximum protein value without breaking the bank. With 100 servings per 5.5 lb bag at just $0.45 per serving, it delivers the lowest cost per gram of protein among major brands. Each 25g scoop provides 21g of protein with only 103 calories, giving it an impressive 84% protein-by-weight ratio for a concentrate.
BulkSupplements Whey Protein Isolate 90% edges ahead with an overall score of 84 vs 78. For value, MyProtein Impact Whey Protein wins with a 95/100 value score.
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Last updated: March 2026
