I often get asked the question .... "What is the best Whey Protein to buy?"
Well, I hesitate to say one brand is heads and shoulders better than another. But I can say what I use and why?
I personally prefer Optimum Nutriton's Gold Standard Whey Protein. I usually get their Double Chocolate flavor. Why do I prefer this brand? The price is reasonable. They use Sucralose as a sweetener instead of some harsh artificial sweetener. They also have Lactase and other enzymes in the blend that make digestion easier and eliminates the problems some people have with protein powders. Carbs and fat are very, very low.
The only small criticism I have is their flavoring is a bit on the weak side for my tastes. But that is easy to solve. The first thing I do when I open a 5-lb plastic tub is add 3 heaping tablespoons of Hershey's unsweetened cocoa. Then shake and mix the container really well.
That extra chocolate powder added gives it the extra chocolate "punch" in flavor I think it is normally missing.