GNC Pro Performance - Mega MRP - Chocolate Drink Mix
OK- this stuff is a bit of an acquired taste but I happen to really like it. It tastes like chocolate (which is not true of many "chocolate" sports drinks), it mixes easily, and it fills me up. Plus it seems to work and has lots of protein. I often drink one of these 20 min or so before surfing or beginning a climbing session and it keeps me going throughout.