I just did 51 miles yesterday... first time on such a long ride with my drops (Nitto b125). I was on the top for most of the ride, both the flats and the corners, and really enjoyed the various positions I had available. I got in the drops during some of the climbs (I thought they were great for climbing) and for some of the more windy sections. I can't be more happy with them.

from Sheldon Brown's site: