I have tried GNC Why Isolate and all the unjury shakes and I hate them all. To the point where I couldn't keep them down. From what I hear, a lot of people have trouble with whey shakes.
My boss who is a marathon runner bought me some Sun Warrior vanilla powder and it works perfectly for me. It is a rice Protein that is very palatable for me. It's about $45.00 per bag, that that's about 50 servings. It's well worth if for me.