So I've been using Mega Men Sport by GNC for about 2 years now. It's great, but costs about $35 w/ 108 servings and it's made by GNC(I'm not a huge GNC fan). While searching through NP's wide range of products I came across Opti-Men by Opitmum Nutrition for only $20 w/ 60 servings. From what I have seen they are almost the same product correct? So should I make the change? Any other suggestions??