Head-to-head comparison updated for 2026. See which protein product comes out on top.
| Attribute | ||
|---|---|---|
| Brand | BulkSupplements | Dymatize |
| Protein / serving | 27gBest | 25g |
| Calories / serving | 110Best | 110 |
| Fat / serving | 0gBest | 0.5g |
| Carbs / serving | 1gBest | 2g |
| Sugar / serving | 0gBest | 1g |
| Price / serving | $0.82Best | $1.03 |
| Price / gram protein | $0.0303Best | $0.0411 |
| Overall score | 84/100Best | 79/100 |
| Value score | 90/100Best | 65/100 |
| Purity score | 93/100Best | 93/100 |
| Protein source | Whey Isolate | Whey Isolate |
| Sweetener | none | sucralose |
| Certifications | GMP Certified | Informed Sport |
| Dietary tags | Gluten-Free, Soy-Free | Gluten-Free |
| Third-party tested | Yes | Yes |
| 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.
Dymatize ISO100 is one of the highest-quality whey protein isolates on the market. What sets it apart is the hydrolysis process, which pre-breaks down the protein into smaller peptides for faster absorption. Each serving delivers 25g of protein with only 110 calories, 0.5g of fat, and 2g of carbs, making it one of the leanest protein options available.
BulkSupplements Whey Protein Isolate 90% edges ahead with an overall score of 84 vs 79. For value, BulkSupplements Whey Protein Isolate 90% wins with a 90/100 value score.
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Last updated: March 2026
