You are so much better off eating real food. Its not even close (although the muscle milk is not bad). The best way to gain weight, is to eat like you normally would, and make a shake right when you wake up...blend the cottage cheese, sugar-free choco syrup, chocolate whey, milk, and ice. Keep it in the blender, in the fridge, and drink 2-3 shakes a day, between your normal 3 meals.