I wanted to know what would be a good source of protein supplemenation for the price. I mean some tubs have only 15 portions. Other tubs have flavor. We all know that when there is flavor there is also lots of preservatives to keep the taste. I just want a Protein shake that is at its most natural. I was on Gen-Rx and it worked great, but let me tell you that I would fart alot, and that my farts smelt really awfull. So let me know whats the best!