Whey isolate is the best. If you're going to be buying it at GNC, then buy the Whey Isolate 28...it's on sale for 24.99 (2lbs). Otherwise buy some online. If you bought the wheybolic, then you wasted your money IMO. It's over priced. Check trueprotein.com and nutraplanet.com. I use ON's gold standard. And I use their casein at night when I don't feel like eating a lot of cottage cheese.
Read through the supplement forum...there are at least 2-3 recent posts that discussed this in depth.
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