Do you know the name of any other premade protein shakes similar to Premier Protein shakes?

I switched to Protein powder. I usually go for a whey isolate protein mix. It his the most pure form of whey protein - usually low calorie, little or no fat, no sugar, and little.no carbs. In my opinion, not nearly as good as the Premier Protein shakes, but I can spice them up a bit with sugar-free syrup or stevia. I've been adding this to sugar-free pudding to make a protein pudding that I have for Breakfast and a few spoonfuls at lunch and dinner as a little desert.

Atkins, south beach, Core Power and EAS, all make a RTD, but they all have more carbs and not as much protein as Premier. Muscle Milk isn't too bad. Their pro series is very comparable to Premier.

I like Muscle Milk Light( banana Crème) but found that it was easier for me to mix my own with Protein powders.