i love this stuff...it's my favorite after trying a variety of brands:

EAS MyoPro Whey
http://www.affordablesupplements.com/simply_protein.asp

only needs 4oz of water, so you dont feel all bloated
dissolves well and isnt thick or frothy
actually tastes good
120 calories & 5g of carbs

some will point out it's "only 20g" per serving...but studies have shown that the body can't process huge amounts of protein at once, so some goes to waste.