I'm currently in my cutting phase, trying to burn away the fat and keep the muscle that I have. I'm finishing up my tub of ON Gold Standard Whey Protein and I need more since I'm running out.S o far I've been content with it. However, Muscle Milk caught my eye and I'm really interested in it. MM is slightly more expensive. If it's better, I'll invest. If it's just as good as ON, I'll stick with what I'm currently using.