Been spending a lot of time on both seats and so far it looks like the Ultimate is going to be the keeper. I have two long rides this weekend and I'm going to try both seats, one on each day then one will be sold because I don't need three seats. The Corbin is a real nice seat but the problem for me is my height, the Corbin set's a little lower than the stock seat so I think it's for "short legged" people.