Legion Whey+ wins on the axis this site weights most heavily after protein itself: trust. The label is fully disclosed with no proprietary protein blends, it's a grass-fed isolate naturally sweetened with stevia and erythritol, and — crucially — it's independently tested in an ISO 17025 accredited lab and Labdoor-certified to be free of contaminants and banned substances. That's a named, verifiable third-party certification, a genuinely stronger testing claim than any of the three picks ranked above it carry. The reasons it sits at #4 rather than higher are dose, value and sweetener. At 22 g per scoop it's a touch lower than the 24-28 g isolates above it — a small, easily closed gap, but a real one. It's a premium price in a small 30-serving tub, so cost per gram trails the commodity whey. And it uses erythritol, a sugar alcohol some people tolerate poorly. For the buyer who wants to know exactly what's in the tub — and to have an independent lab confirm it — Legion is the clear pick; for raw value or a slightly higher dose, the picks above it answer those better.
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Read the complete Protein Powder guide →22 g of grass-fed whey isolate per scoop with 5.5 g of BCAAs — a high-quality, lean dose from a fully disclosed isolate. The only reason it's not higher: 22 g is a touch below the 24-28 g isolates ranked above it. A small gap, easily closed with a slightly heavier scoop or whole-food protein, but a real one on this axis.
The transparency leader of the lineup. Fully disclosed label with no proprietary protein blends — you can see exactly what's in the tub and in what amount — non-GMO, sugar free, lactose and gluten free. No amino-spiking concern whatsoever. Best-in-class on the axis this site prizes most after protein.
The strongest named testing claim above it: independently tested in an ISO 17025 accredited lab and certified by Labdoor to be free of contaminants and banned substances. Verifiable, named, and independent — a genuinely stronger signal than the "None stated" and brand-stated claims of the higher-ranked picks.
A premium product in a small tub. At roughly $1.67 per serving across 30 servings, cost per gram trails commodity whey like Gold Standard (~$0.95) by a wide margin. The verified, fully disclosed label justifies a premium, but on pure cost efficiency it can't match the big commodity tubs.
A clean-tasting chocolate isolate that mixes well, naturally sweetened with no artificial sweeteners. Scored a notch lower because it relies on erythritol, a sugar alcohol that can cause GI discomfort in sensitive individuals — a preference and tolerance factor rather than a quality flaw.
“Fully transparent label with no proprietary blends.”
The fully disclosed formulation with no proprietary protein blend is stated on the listing and is the basis for Legion's perfect transparency score. Every ingredient and amount is visible — an accurate, verifiable claim and the product's central selling point.
“Independently lab-tested and Labdoor-certified, free of banned substances and contaminants.”
Testing in an ISO 17025 accredited lab and Labdoor certification are stated on the listing — both are real, named, independent programs. The strongest verifiable testing claim among the picks ranked above it, and accurate as stated.
“Naturally sweetened with no artificial sweeteners.”
The product is sweetened with stevia and erythritol rather than sucralose or acesulfame potassium, with 0 g added sugar, as stated on the listing. Accurate — with the honest footnote that erythritol is a sugar alcohol some users tolerate poorly.
Legion's whole case is trust, and it backs the claim. The label is fully disclosed with no proprietary blends, and it's independently tested in an ISO 17025 accredited lab and Labdoor-certified free of contaminants and banned substances. That named, verifiable certification is genuinely stronger than what the three higher-ranked picks carry — Gold Standard states none on its listing, and Transparent Labs' testing is brand-stated only. For a buyer who weights verified purity heavily, Legion is the most reassuring pick on the board.
The single reason Legion sits at #4 rather than higher is dose: 22 g per scoop is a touch below the 24-28 g isolates above it. In practice the gap is small and easily closed — a slightly heavier scoop or any whole-food protein covers it — so it rarely matters for hitting a daily target. But on a strict protein-per-scoop basis it's a real, if minor, knock against an otherwise outstanding product.
Legion avoids artificial sweeteners by using stevia plus erythritol, a sugar alcohol. For most people that's a clean win. For the minority who don't tolerate sugar alcohols, erythritol can cause bloating or GI discomfort — so if you know they don't agree with you, a stevia-only pick like Transparent Labs (#3) or Ascent (#5) is the safer choice. It's a tolerance and preference factor, not a quality flaw.
Legion Whey+ wins the axis this site cares about most after protein: trust. A fully disclosed label with no proprietary blends, grass-fed and naturally sweetened, independently tested in an ISO 17025 lab and Labdoor-certified free of contaminants and banned substances. If knowing precisely what you're drinking — and having an independent lab confirm it — is your priority, this is the clearest answer in the lineup. It lands at #4 on dose, value and sweetener, not on quality. At 22 g per scoop it gives up a couple of grams to the isolates above it, it's a premium price in a small tub, and its erythritol won't suit everyone. Those are reasons to look elsewhere only if your priority is raw protein-per-scoop (Transparent Labs, #3), lowest cost (Gold Standard, #1), or sugar-alcohol-free sweetening (Ascent, #5). For verified transparency, Legion is the pick.
Check Legion · 22g grass-fed isolate, Labdoor-certified · 30 servings on AmazonAlso grass-fed and clean, with a higher 28 g per scoop and stevia-only sweetening — but only a brand-stated testing claim. Pick this if you want more protein density and no sugar alcohols, and the named seal matters less.
See it on the list →The other named-certification pick — NSF Certified, single-ingredient, unflavored. Choose this if you want the absolute minimalist verified base and don't mind flavoring your own shakes.
See it on the list →The value benchmark at ~$0.95 a serving. Pick this if affordable, reliable protein matters more than a fully verified, fully disclosed label.
See it on the list →Meta-analysis of 49 studies (1,863 participants): protein supplementation significantly augmented resistance-training gains in muscle mass and strength, plateauing around 1.6 g/kg/day. Context for why even a slightly lower 22 g scoop is fully effective when it helps you reach that daily target.
Pooling 22 RCTs, supplemental protein during resistance training significantly increased fat-free mass, fiber cross-sectional area and 1-RM strength. The core evidence that a quality verified isolate is a legitimate training tool.
Review concluding adequate total daily protein supports performance, recovery and adaptation, with peri-exercise timing a useful but secondary factor. Reinforces that a trusted, verified protein's job is to help you hit a daily target consistently.
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