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Head to head · Protein Powder

Legion Whey+ Grass-Fed Whey Protein Isolate vs Momentous Grass-Fed Whey Protein Isolate

Legion scores higher overall (8.3 vs 7.9 out of 10), mainly on value and transparency. Momentous still leads on quality & purity.

Updated September 2026 from our full reviews · How we score

Higher score
Front of Legion Whey+ Dutch Chocolate 30-serving bag
LegionWhey+ Grass-Fed Whey Protein Isolate
8.3
Good

A naturally sweetened whey isolate from Truly Grass Fed-certified Irish milk, with Labdoor certification and batch lab reports linked online.

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Front of Momentous Whey Protein Isolate Vanilla 25-serving jar
MomentousGrass-Fed Whey Protein Isolate
7.9
Good

A premium grass-fed whey isolate with 20 g of protein per 90-calorie scoop, NSF Certified for Sport status and a short, gum-free ingredient list.

Check price on AmazonBuy from the brand$59.99

We may earn a commission when you buy through these links — it never affects our scores. How we make money

Read the full review

We may earn a commission when you buy through these links — it never affects our scores. How we make money

The short answer

Choose Legion if…

  • People avoiding artificial sweeteners and dyes
  • Shoppers who want verified grass-fed sourcing
  • Buyers who like checking lab reports
  • You care most about value, transparency

Choose Momentous if…

  • Drug-tested and professional athletes
  • Minimalist ingredient lists without gums or artificial sweeteners
  • People with sensitive digestion
  • You care most about quality & purity

Side by side

Whey+ Grass-Fed Whey Protein IsolateGrass-Fed Whey Protein Isolate
Our score8.3 / 107.9 / 10
Efficacy (30%)8.48.3
Quality & Purity (25%)8.99.5
Value (20%)7.06.2
Experience (15%)8.08.0
Transparency (10%)9.26.0
FormPowderPowder
Serving1 scoop (26 g, Dutch Chocolate)30 servings per container1 scoop (25 g, Vanilla)25 servings per container
Price per servingSee retailer$2.40
Testing & certifications
NSF Contents CertifiedThird-party testedNon-GMO Project Verified
NSF Certified for Sport
DietaryGluten-free, Non-GMO, Sugar-freeGluten-free, Non-GMO
Key ingredients
  • Truly Grass Fed whey protein isolate21-23 g protein (varies by flavor)
  • Stevia leaf extract
  • Grass-fed whey protein isolate23.3 g (20 g protein)
  • ProHydrolase (protease enzyme blend)200 mg
  • Monk fruit extract and stevia
Flavors8 (Dutch Chocolate, French Vanilla, Cinnamon Cereal…)8 (Vanilla, Chocolate, Unflavored…)
Creator video reviews55

Pros and cons

Whey+ Grass-Fed Whey Protein Isolate

  • Whey isolate certified under the Truly Grass Fed program
  • NSF contents-certified (Dutch Chocolate and French Vanilla) and Labdoor-certified, with certificates of analysis linked online
  • No artificial sweeteners or dyes, and no added sugar
  • buyers often mention smooth mixing and easy digestion
  • 21 to 23 g of protein per scoop, a little below leading isolates
  • About $2.06 per serving, with a higher list price on the brand site
  • Stevia is noticeable to some reviewers
  • Not in the NSF Certified for Sport or Informed Choice programs, and the Amazon listing states it contains milk and soy

Grass-Fed Whey Protein Isolate

  • NSF Certified for Sport, with lot-level testing and published certificates of analysis
  • Grass-fed European whey isolate with no gums, fillers or artificial sweeteners
  • Only 90 calories per 20 g protein serving
  • Unflavored version contains just whey isolate and enzymes
  • About $2.40 per serving (roughly 12 cents per gram of protein) before subscription discounts
  • 20 g of protein per scoop is lower than most competitors
  • buyer reviews are split on taste, mixability and a recent reformulation
  • ProHydrolase is labeled as a proprietary enzyme blend, and its benefit is not well established

Our verdicts

Whey+ Grass-Fed Whey Protein Isolate

Legion Whey+ is one of the most credible naturally sweetened whey isolates, pairing certified grass-fed sourcing with public lab testing. You get slightly less protein per scoop than some rivals and pay a premium, but for buyers avoiding artificial sweeteners who want proof of what is in the bag, it is an easy recommendation.

Full review

Grass-Fed Whey Protein Isolate

Momentous whey is a top pick for athletes who need certainty: NSF Certified for Sport status, lot-by-lot testing and a minimalist, gum-free formula built on grass-fed isolate. You pay heavily for that assurance and get only 20 g of protein per scoop, so value-focused lifters will find better deals elsewhere.

Full review

What creators say

Questions people ask

Is Legion better than Momentous?
In our scoring, Legion Whey+ Grass-Fed Whey Protein Isolate rates higher overall (8.3 vs 7.9 out of 10). Legion leads on value and transparency; Momentous leads on quality & purity. Scores weigh efficacy, quality, value, experience and transparency.
Are Legion and Momentous third-party tested?
Legion carries NSF Contents Certified; Momentous carries NSF Certified for Sport. Sport-level certifications screen for banned substances, which matters for drug-tested athletes.
Who should choose Legion over Momentous?
Our reviews suggest Legion is best for people avoiding artificial sweeteners and dyes, shoppers who want verified grass-fed sourcing and buyers who like checking lab reports, while Momentous is best for drug-tested and professional athletes, minimalist ingredient lists without gums or artificial sweeteners and people with sensitive digestion.

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