Head-to-head comparison updated for 2026. See which protein product comes out on top.
| Attribute | ||
|---|---|---|
| Brand | Legion Athletics | Optimum Nutrition |
| Protein / serving | 22g | 24gBest |
| Calories / serving | 130 | 120Best |
| Fat / serving | 2.5g | 1.5gBest |
| Carbs / serving | 3gBest | 3g |
| Sugar / serving | 1gBest | 1g |
| Price / serving | $0.90 | $0.86Best |
| Price / gram protein | $0.0407 | $0.0360Best |
| Overall score | 75/100 | 76/100Best |
| Value score | 66/100 | 78/100Best |
| Purity score | 93/100Best | 73/100 |
| Protein source | Whey Isolate | Whey Blend |
| Sweetener | stevia | sucralose |
| Certifications | Non-GMO | Informed Sport |
| Dietary tags | Soy-Free | Gluten-Free |
| Third-party tested | Yes | Yes |
| Buy on Amazon | Buy on Amazon |
Legion Whey+ takes a science-first approach to protein supplementation, using 100% whey isolate from grass-fed, hormone-free cows. Founded by author Mike Matthews, Legion emphasizes evidence-based formulation and ingredient transparency. Each serving provides 22g of protein with 5.1g of BCAAs, naturally sweetened with stevia and erythritol.
Optimum Nutrition Gold Standard 100% Whey is the best-selling whey protein powder in the world, and for good reason. With 24g of protein per scoop from a tri-blend of whey isolate, concentrate, and peptides, it delivers a well-rounded amino acid profile including 5.5g of BCAAs and 11g of EAAs per serving. The Double Rich Chocolate flavor is consistently praised as one of the best-tasting protein powders on the market.
Optimum Nutrition Gold Standard 100% Whey takes the lead with an overall score of 76 vs 75. For value, Optimum Nutrition Gold Standard 100% Whey wins with a 78/100 value score.
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Last updated: March 2026
