I like the Grape Frost best. But I drink them over shaved ice. It's pretty close to a DQ Mr. Misty.
It's a good way to get your protein and your liquids in at the same time. I fill a 32 oz. glass with shaved ice (approx 20 oz. liquid) then half the bottle (10 oz.) as a morning "snack". Then repeat in the afternoon. This gives me 60 oz. of fluid and 40 grams of protein. Sweet!