Two of the most trusted names in whey protein, side by side: NOW Foods’ no-frills isolate versus Optimum Nutrition’s flavor-forward classic. Here’s how they actually compare for 2026 buyers looking for the best protein powder for their goals.
| Product | Score | Price | Best For |
|---|---|---|---|
| NOW Foods Whey Protein Isolate | 8.8/10 | $89.55 | Clean ingredients, protein-per-dollar, unflavored control |
| Optimum Nutrition Gold Standard 100% Whey | 8.5/10 | ~$60-70 | Flavor variety, easy mixability, beginner-friendly taste |
Winner: If you want the cleanest possible ingredient list and the most protein per dollar, go NOW Foods. If taste and mixability matter more than squeezing out every gram-per-dollar, Optimum Nutrition’s flavored lineup is the easier daily habit to stick to.
Read the full NOW Foods review →
Read the full Optimum Nutrition review →