Head-to-head comparison updated for 2026. See which protein product comes out on top.
| Attribute | ||
|---|---|---|
| Brand | BulkSupplements | Levels |
| Protein / serving | 27gBest | 24g |
| Calories / serving | 110Best | 130 |
| Fat / serving | 0gBest | 2.5g |
| Carbs / serving | 1gBest | 3g |
| Sugar / serving | 0gBest | 0g |
| Price / serving | $0.82 | $0.79Best |
| Price / gram protein | $0.0303Best | $0.0329 |
| Overall score | 84/100Best | 80/100 |
| Value score | 90/100Best | 82/100 |
| Purity score | 93/100Best | 82/100 |
| Protein source | Whey Isolate | Whey Concentrate |
| Sweetener | none | stevia |
| Certifications | GMP Certified | Non-GMO |
| Dietary tags | Gluten-Free, Soy-Free | Gluten-Free, Soy-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.
Levels Grass-Fed Whey is the product that proves you do not have to choose between clean ingredients and good value. At $0.79 per serving from the 5 lb tub, it is one of the most affordable grass-fed proteins available — cheaper than many conventional whey options. The 76-serving container means it lasts over two months of daily use.
BulkSupplements Whey Protein Isolate 90% edges ahead with an overall score of 84 vs 80. For value, BulkSupplements Whey Protein Isolate 90% wins with a 90/100 value score.
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Last updated: March 2026
