I switched from the Arione to the Inform and will never go back. The first time I used the Inform was on a Century ride this past April, and it was the most pleasant Century (butt-wise) that I have ever ridden. For me, the fit is great and some issues I was having in the perineum no longer exist. Last week I bought a second Inform for my commuter bike, replacing a stock Bontrager. Be sure to be fitted if you decide to try one.