I use "Mega" Milk, but it has glycocyamine in it as well. But I only use mega milk to flavor my shakes. I use Optimum Nutrition Serious Mass mixed with Pro Complex Gainer along with oat meal and whole milk (Yes, I'm an ectomorph), and I add a scoop of bananna flavored Mega Milk to make the shake taste good.
DAMN!! I don't wanna stop using Mega Milk! It tastes great!!!!