For years i drank Optimum Whey Protein, it is one of the highest rated ones out there, and only 140 cals. However, one day i tried some BSN Syntha-6. It has 200 calories, but the thing tastes like a milkshake. It was at that point i realized how nasty Optimum tastes, so now I drink mostly Syntha-6.

Optimum is still the most popular out there by far. www.amazon.com has alot of good ratings about protein, so does www.bodybuilding.com