400-800 primo and 20-50 dbol is a nice range for an average-sized guy with some experience. The say it's Arnold's fave, but he probably used a ton of things, since I heard he liked deca alot too, and like most pros, used it all as it came along . . . But it's one of my faves for sure! Its feels like a soft test/deca cycle with few sides, and the dbol adds some punch, an edge. But you have to be a big dbol fan. I don't think there's any special synergy per se, just a great injectable and a great oral.