Drops with two brake levers for me. Assuming your bike actually fits you and the levers are positioned properly the hoods are a very comfortable position that still lets you see everything and react quickly, similar to bullhorns really. I spend most of my time on the hoods. Down in the drops is for aero when high speed cruising in a pack or big hills for the leverage. If I need to change up my grip I'll some time ride with my palms on the back of the curve behind the hoods. I don't understand riding on the flats. I'll move my hands there only when riding very slow if I'm sitting up straight to look around.