Personally I can hardly choke down the EAS carb control RTDs.
I've switched to the syntrax nectars...which is a powder. I like the fact that I didn't have to get the vanilla, strawberry, chocolate staple that most are...
The taste for me is wonderful (I have Lemonade and fuzzy navel), and makes eating this way so much easier!
I've just started, so I don't know how well they will do, but they are 100 cal, 0 carb, and 23 g of protein per scoop. They are Whey based. (Have a thyroid issue, so I shouldn't be having soy that much...though I do have a restricted that's soy protein, but having them later at night.)