Momentous Essential Grass-Fed Whey Protein Isolate
Athletes and health-conscious consumers who prioritize third-party testing and heavy metal safety
Optimum Nutrition Gold Standard 100% Whey
Budget-conscious gym-goers who want proven, great-tasting protein at the best value
Score Comparison
Pricing & Features
Making Your Decision
When to Choose Momentous Essential Grass-Fed Whey Protein Isolate
Athletes and health-conscious consumers who prioritize third-party testing and heavy metal safety
Momentous sets the standard for clean, safe protein powder. NSF Certified for Sport and ranking among the safest in Consumer Reports heavy metal testing make it the top choice for anyone who values purity above all else. The premium price is the trade-off for that peace of mind.
Strengths
- NSF Certified for Sport — the gold standard for third-party testing verification
- Ranked #3 safest in Consumer Reports 2025 heavy metal screening (below detection limits)
- Grass-fed whey protein isolate with minimal ingredient list
Limitations
- Premium price at $2.40/serving puts it among the most expensive options
- Only 25 servings per container requires frequent reordering
- Limited flavor selection compared to mass-market competitors
When to Choose Optimum Nutrition Gold Standard 100% Whey
Budget-conscious gym-goers who want proven, great-tasting protein at the best value
Gold Standard has been the world's best-selling protein powder for over a decade, and the value proposition is hard to beat — 74 servings at $1.08 each with Informed Choice certification. The trade-off is artificial ingredients and a whey blend rather than pure isolate.
Strengths
- Informed Choice certified — the most popular protein powder worldwide for a reason
- Outstanding value at $1.08/serving with 74 servings in the 5lb size
- Excellent taste and mixability across 20+ flavor options
Limitations
- Contains artificial flavors (acesulfame potassium) and soy lecithin
- Uses whey blend (isolate, concentrate, peptides) rather than pure isolate
- Does not publish independent lab test results or batch-level COAs
