The first time I ever read the nutritional information for Muscle Mlik, I laughed my ass off and couldn't believe they called it a performance supplement. The original mix was just loaded with fats, carbs, and didn't really have much protein. As mentioned earlier, it tasted like cake mix- but really wasn't worth the container it was packaged in.
Now that they have reformulated their mixture(s), it is a little more respectable... but still horrifically overpriced. The flavors are great, although it still doesn't offer the potency serious lifters are after... not to mention the unwanted carbohydrate/fat/satfat tag-alongs. I will only buy Muscle Milk if I am in a pinch and am unable to consume higher quality protein- such as Optimum Nutrition's.
Only in dire straights do I bother with it,
-Chris