Has anyone tried or has some info on Optimum Nutrition Serious Mass?? I've been trying to gain some mass and it is just not working. I have been working out on a regular basis, lifting heavy and eating right (protein per body wt, ect...) I joined the gym 7 wks ago starting at 197lb, now 190lb; I feel like a bean pole, I can't stand it. Should I try a wt gainer?? If so should I give up the 100% whey or use both in some manner??