When I first got into cycling I was into hybrid bikes and brought a flat bar carbon road bike, the Giant Rapid Advanced 2011.
I've since converted the bike to drop bars with 105 shifters which works very well.
Looking at the geometry, the main difference of the Rapid Advanced frame to the usual road bike frame (like Defy) is that the top bar is about 2cm longer to accommodate the original flat bar.
Changing the frame is going to be expensive and I wondered if it was really worth it in terms of performance. The bike certainly goes well in hill climbs.
Can anyone advise me on this?