I've been playing with my bar positioning a bit lately. My latest setup is to have the flats of the drop almost parallel to the ground. For me this makes the drop seem shallower and more comfortable. I tend to stick to the drops, but if I'm not going very fast I move to the tops or hoods. When in the drops I like have my hands positioned so that I can reach with my fingers and brake if needed. When climbing my hands go right to the tops, I usually don't need to brake when climbing.