Thanks for the responses. I thought of adding fiber,fat ect... to slow down the digestion of whey, but if I do that at night I get heartburn, where if I take just a shake it's fine, but then I don't get the slow release. I also don't like adding the extra calories. The casein I found is actually cheaper than the whey I take, so that's a big plus as well.
So i'm sold -lol-
I was going to buy Optimum Nutrition (4 pounds) for $40. Anyone know of anything better?