I don't have a problem with drops, but I haven't used them in a long time. One of my bikes has a flat bar, the other has a bullhorn bar with brifters. The flat bar bike is more comfortable than the one with the bullhorn bar, and I've ridden several metric centuries, one near imperial century, and one full imperial century on it - but the bullhorn bar bike is noticeably faster (usually average 1.5 - 2km/h faster when riding it). Still, my next bike, if and when I buy one, will be a full road or cyclocross bike with drops, as I feel I'm pretty much at the limit of what I can do performance wise with the bikes I've got (since they're both far from being light).