I've got bullhorns on one of my roadbikes and really like them. For some reason it makes the bike more fun to ride. I've got TT brakes mounted at the ends of the bars, and I've got downtube shifters on my frame. My hands are on the horns about half the time and on the tops about half. The horns are better if you going faster or riding in windy conditions. I didn't change my stem length. BTW, I made my bullhorns from some old handlebars by just cutting off the drops.