Here's the thing with supplements as far as I'm concerned:
Yes, MTNOPS markets the hell out of their product, but they're also in one helluva competitive industry who are all selling the same snake oil (face it, none of this shit is going to be super effective because if it is, it'll be illegal pronto). The only thing that they can do is differentiate on price, customer service, or "image". I used supplements in the past that I've purchased from GNC, Naturtyme, etc. I can get the same thing for the same price from a company that supports hunting and if there's an issue I can email Casey or Jordan and get a response.
So I get it from MTNOPS.