[TheHorseman]

I've worked with numerous pro athletes and let me state that most of them aren't where they are because of their infinite knowledge of nutrition and training...

A pro athlete endorsing something should carry absolutely NO water with anyone... Supplement, exercise or whatever. MOST pro athletes are where they are because of raw ability and opportunity. In most cases, they've always been great.

Hell, kind of off-topic, but watch the vids of Clemens training with Brian McNamee - I'd kill my clients for squatting the way he is in those vids...

Bottom line, show me someone who was physically nothing that became a beast or even a GOOD athlete, and I'll be much more impressed...

Edit: with all of this being said, I can't tell you the last time I bought a primary whey product. I buy blends that contain many different types (casein, egg, whey, etc). People obsess over small things that don't make a huge difference in the long run anyway.