Emily Moore47 said:just grab any...
If you’re having a hard time putting on mass—which seems to be the case here—then I’d suggest looking into a weight gainer to hit your goals. Just search for them online. 👍
Don't just grab anything. Please, stop handing out advice like that.
If you want my take, stick with Gold Standard from Optimum Nutrition or EAS whey.
If you're watching your wallet, go with Twinlab. You could also look at Olimp; they have great solubility and likely use the fewest artificial sweeteners, given that the taste is quite blunt—almost bitter—but that’s usually a sign of quality. Cytosport is one of the heavy hitters in the US; their Muscle Milk is everywhere, though it isn't pure whey. They do sell pure whey, but I wouldn't recommend it because the price tag is ridiculous. Like EAS, Cytosport carries the NSF certification for product control.
http://eas.com/pro-certified/nsfSteer clear of Dymatize (unless you pick up their natural whey, which actually surprised me with its ingredients; it's one of the few options available locally without artificial sweeteners since it uses stevia extract). That said, I still have doubts about the actual protein percentage and the ratio of concentrate to isolate, which you can tell by the powder's texture and how it dissolves in milk.
Avoid Universal Nutrition. They’re famous mostly for their animal products and used to be big on amino acids, but their protein quality is questionable at best. Their BCAA capsules are an absolute disaster.
Labrada is overpriced for the quality they deliver, and Weider is essentially selling you a brand name while providing inferior products at premium prices.
Muscletech gets a lot of hype, but they don't offer anything special that justifies their price point, much like BSN.
My recommendation? Stick to Optimum, EAS, or Olimp (if you don't mind a somewhat bland taste). I've used them myself and have been consistently satisfied.