Dymatize Super Mass Gainer is essentially Optimum Nutrition Serious Mass's closest rival, and on raw numbers it edges ahead — 1,280 calories and 52 g of a genuinely good whey-concentrate, whey-isolate and casein blend with 10.7 g of BCAAs, and it's frequently the cheapest tub per calorie on the whole list. Mixability and the Gourmet Vanilla flavor are strong. It sits one rung below ON only on the extras: the creatine is a token 1 g rather than an effective dose, and ON's broader vitamin panel and best-seller value edge it out.
The core caveat is identical, though — the carbohydrate is maltodextrin and there's about 26 g of sugar a serving. It's a fine high-calorie, high-protein tub for someone who wants maximum macros per scoop and isn't bothered by the sugar.