I am using N-large2 myself and its a great product, I thought I was the classic hardgainer, turns out I just wasnt eating enough. I take 3 servings a day and usually throw in a banana and tablespoon of peanut butter to add some flavor and calories. I have put on nearly 10 lbs in a month, which isnt much when you start at 150 lol but hey! Best of luck..