Optimum Nutrition is descent protein, although I find it funny that they can keep it that cheap with their protein blend, isolate is a pricy protein type and they have it mixed in as one of the protein blends for the Gold Standard Whey. Another thing, Optimum Nutrition used to be a distributor, then they went into creating their own supplements, they were competition of BOSS, and Europa, but i would much rather see somone taking ON then the GNC proteins, GNC protein (Pro Performance Line) are really bad, the cholestrol in their weight gainers are really high, their proteins taste like garbage, and the absorption is tarable, your body wont even use most of the protein you take in, do to the digestion process.....Thats how they get you, they dont put digestive enzyme in some of their proteins, instead they willtell you to get a digestive enzyme from their line.....I personally really like Isopure, Nitro-Tech is pretty good, BSN is cool, and ofcoarse MET-RX, and Myoplex are good proteins, and theirs a couple moe good ones that i cant think of now.