Critical Mass Professional Lean Mass Gainer Strawberry 6kg (40 Servings) vs Serious Mass Banana 2.73kg
Side-by-side comparison of scores, ingredients, prices and real customer feedback for Critical Mass Professional Lean Mass Gainer Strawberry 6kg (40 Servings) and Serious Mass Banana 2.73kg.
Last verified: 07 Apr 2026 · Based on 13 reviews
Critical Mass Professional Lean Mass Gainer Strawberry 6kg (40 Servings) scores 74.0/100 vs Serious Mass Banana 2.73kg at 70.0/100. Critical Mass Professional Lean Mass Gainer Strawberry 6kg (40 Servings) wins on ingredient quality, side effects, certifications. Serious Mass Banana 2.73kg is stronger on effectiveness and value for money.
Which is better: Critical Mass Professional ... or Serious Mass Banana 2.73kg?
Applied Nutrition Critical Mass edges ahead with its Informed Sport certification and more complete formula (creatine, HMB, CLA), making it the safer pick for those who care about third-party testing. Optimum Nutrition Serious Mass suits budget-conscious buyers — £40 vs £52.95 — who prioritise taste and raw calorie density over added extras.
— AIScored Editorial Team
How Do the Scores Compare?
Critical Mass Professional ...
Applied Nutrition
|
Serious Mass Banana 2.73kg
Optimum Nutrition
|
|
|---|---|---|
| Overall Score | 74.0 | 70.0 |
| Effectiveness | 73.0/100 |
80.0/100
Best
|
| Ingredient Quality |
76.0/100
Best
|
70.0/100 |
| Value for Money | 71.0/100 |
80.0/100
Best
|
| Side Effects |
77.0/100
Best
|
70.0/100 |
| Certifications |
83.0/100
Best
|
30.0/100 |
| Best Price | £52.95 Amazon UK → |
£40.00
Holland & Barrett →
Cheapest
|
| Form | Powder | powder |
| Dose | None | None |
| Third-Party Tested | ✗ No | ✗ No |
| Reviews Analysed | 9 | 4 |
Critical Mass Professional Lean ...
Pros
- ✓1,000+ calories per serving well-suited to hard gainers who struggle to hit caloric surplus
- ✓Informed Sport registered — meaningful third-party quality and contamination testing
- ✓Comprehensive formula beyond just protein: creatine monohydrate, HMB, glutamine, CLA, and MCT
- ✓Reduced-sugar formulation compared to older mass gainers — favourable for lean bulk
Cons
- ✗Taste inconsistency across batches — some report a chemical or medicinal aftertaste in the strawberry flavour
- ✗150g per serving is a very high volume, potentially difficult for smaller individuals or those with lower appetite
- ✗Not vegan — whey-based formula unsuitable for plant-based users
- ✗1,000+ kcal per serving requires careful use; excess can lead to unwanted fat gain if training volume is not sufficient
Best For
Serious Mass Banana 2.73kg
Pros
- ✓Excellent taste (specifically noted as 'tasty' and 'marvellous')
- ✓High calorie density (1,250 kcal per serving) efficiently supports weight gain goals
- ✓Substantial protein content (50g per serving) supports muscle building and repair
- ✓Good value for money at current pricing
Cons
- ✗Very high sugar content (12g per serving) may be concerning for some users
- ✗Not third-party tested or certified
- ✗High sodium per serving (1.48g salt) may be problematic for sodium-sensitive individuals
- ✗Contains multiple allergens (milk, soy, gluten possible) limiting suitability for those with common allergies
Best For
What does the data say about Critical Mass Professi... vs Serious Mass Banana 2.73kg?
Critical Mass Professional by Applied Nutrition scores 74/100 overall at £52.95 for 6kg, while Optimum Nutrition's Serious Mass Banana comes in at 70/100 for £40.00 for 2.73kg. The formulas take noticeably different approaches. Critical Mass packs creatine monohydrate, HMB, glutamine, CLA, and MCT alongside its protein, making it a more involved stack in a single scoop. Serious Mass keeps things simpler, leaning on sheer calorie density — 1,250 kcal per serving against Critical Mass's 1,000+. On ingredient quality, Critical Mass wins at 76/100 versus 70/100, though Serious Mass scores higher on effectiveness at 80/100 versus 73/100.
Who you pick depends on what you're prioritising. If you want the more complete formula with added compounds beyond protein and calories, Critical Mass makes sense, particularly if you're in a dedicated bulk or recovering from illness or surgery. The catch is that 150g per serving is a serious commitment — anyone with a smaller appetite may find it genuinely hard to stomach. Serious Mass is the better call if you want straightforward, high-calorie convenience on a tighter budget: it scores 80/100 for value against Critical Mass's 71/100, and at £40.00 for 2.73kg it offers more accessible entry-level pricing.
On taste, Serious Mass banana has been widely praised. Critical Mass strawberry is a different story — some batches reportedly carry a chemical aftertaste, which is worth knowing before you commit to 40 servings. Serious Mass does contain 12g of sugar per serving, which may be a consideration depending on your dietary goals.
Applied Nutrition Critical Mass Professional is a high-calorie lean mass gainer delivering 1,000+ calories and 42g of protein per 150g serving, built around ISO-XP 95% Whey Protein Isolate with added creatine monohydrate, HMB, glutamine, leucine, CLA, and MCT powder.
What are the key differences?
Frequently Asked Questions
Which is better, Critical Mass Professional Lean Mass Gainer Strawberry 6kg (40 Servings) or Serious Mass Banana 2.73kg? ▼
Is Critical Mass Professional Lean Mass Gainer Strawberry 6kg (40 Servings) worth the price compared to Serious Mass Banana 2.73kg? ▼
Which has fewer side effects? ▼
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Disclaimer: AIScored provides data-driven comparisons based on publicly available reviews. This is not medical advice. Affiliate links may earn us a commission at no extra cost to you.
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