The Corbin is certainly hard and takes some miles to "break-in" (hah!), but don't discount the affect of the backrest. The backrest setup is pretty slick. With a small allen screw you can adjust the angle of the backrest to give more support during a long ride. The way the back armour in my jacket supports my whole back when pressed against the backrest makes the hard seat a non-issue. I have considered sending my seat to butt-buffer to have one of their gel inserts added to it, but for now I am leaving it alone. I never have a problem sitting for as long as a tank of gas lasts (about 100 mi. for me). YMMV
