I'm visiting GNC to pick up a weight gainer and Muscle Juice (from the nutrition label) looked better than the GNC 1850. Particularly, the serving amount per bottle: GNC's has 5 servings per bottle (at 400 g a serving for 1850 calories) and MJ has 19 servings (at ~180 g for 1000 calories) and they are the same price. So, MJ has about the same number of calories for number of grams but you get twice as much per container. Anyone here tried MJ before? Thanks.