They both work great, yea I'd say that you probably don't need to worry about gaining a whole lot of weight, I'm a differant story 6'1" and trying hard top stay above 180. Cyto gainer worked great for me helped me stack on about 8 extra pounds, Muscle milk is a pretty good plain whey protien, I think it's like 96% digestabl. Good stuff if you can find a place that sells them other then GNC do it it's much much cheaper.