Unless you are allergic to whey protein concentrate you will safe yourself alot of money by just getting the cheap shit. It's all whey, just make sure it's not diluted with filler. If you get x amount of whey protein concentrate for say $29 you would get the same amount of whey protein isolate for like $100. Unless you have money growing on trees, does it really make that much of a difference? The EAS bags of whey at Sam's Club are real cheap - almost as cheap as you can buy anywhere on the internet.
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