Klean Athlete Klean Isolate
Professional and Olympic athletes who need NSF-certified protein with pharmaceutical-grade purity
Legion Whey+ Grass-Fed Whey Protein Isolate
Health-conscious lifters who want grass-fed isolate with natural sweeteners and full transparency
Score Comparison
Pricing & Features
Making Your Decision
When to Choose Klean Athlete Klean Isolate
Professional and Olympic athletes who need NSF-certified protein with pharmaceutical-grade purity
Klean Athlete is purpose-built for competitive athletes who cannot risk contamination. NSF Certified for Sport plus pharmaceutical-grade manufacturing standards make it one of the safest protein powders available. The unflavored single-ingredient option is ideal for purists.
Strengths
- NSF Certified for Sport — trusted by Olympic and professional athletes
- Single-ingredient unflavored option available for maximum purity
- Made by supplement industry leader (Atrium Innovations) with pharmaceutical-grade standards
Limitations
- Flavored options (Vanilla, Chocolate, Strawberry) are less sweet than mainstream competitors
- Only 20 servings per pouch at $2.20/serving is expensive
- Limited retail availability — primarily sold through specialty channels
When to Choose Legion Whey+ Grass-Fed Whey Protein Isolate
Health-conscious lifters who want grass-fed isolate with natural sweeteners and full transparency
Legion Whey+ combines grass-fed Irish whey isolate with a clean, naturally sweetened formula. Labdoor A+ rating and published lab results provide strong purity assurance even without NSF certification. The taste is consistently praised for a natural-sweetener protein.
Strengths
- Naturally sweetened with stevia and erythritol — no artificial sweeteners or dyes
- Grass-fed whey isolate from Irish dairy with full label transparency
- Labdoor A+ rated with published independent lab test results
Limitations
- Not NSF Certified for Sport — relies on Labdoor independent testing
- Stevia-erythritol blend sweetener may have a slight aftertaste for some
- Slightly more expensive than comparable isolates at $1.67/serving
