I'm 6'5 with a wingspan of slightly longer. I've never really been into supps beyond whey and creatine, and I'm a very hard gainer. I've been bulking since the beginning of May and I'm going to go until about mid-June then cutting. My problem is, with a frame as big as mine(32' long arms to give you an idea), I need all the muscle I can get to fill out and I really can't afford to lose muscle on a cut. Over the years, I've figured out how to eat well on a cut, but I've never really tried any supps to retain muscle, and by "never really" I just mean "never". I've heard a lot of good things about casein and muscle retention, but is there anything else anyone would suggest to help me out?