Any chance you could be lactose intolerant? I am and I found that Elite is the easiest to digest because they add proprietary digestive enzymes. It is also one of the best tasting of the many I have tried
http://www.saveonsupplements.com/ndyel5pr.html
If you are worried about fat and have extra money, they make a liquid protein with zero fat! I say save the moeny and stay on the elliptical machine an extra 15 minutes instead
http://www.saveonsupplements.com/ellipr.html