HIE, have you tried Dymatize's Blueberry Muffin 12-hour? It's probably my favorite. The Fudge Brownie and Banana Nut are excellent as well.

But it does seem that supplement companies tend to stick with the "tried and true" flavors, even if they're boring or never quite turn out right (cookies and cream being one of these).

Cytosport is very adventurous, the number of MM flavors is mind-numbing. I could see them doing Peanut Butter.