My bike came with the "standard" Corbin (which I just sold). I sold it primarily to get the "close" version. With the standard, everytime I hit the gas, I would slide backwards in the seat, and conversely, when I hit the brakes, I would slide forward. To me, this was very annoying. Part of the problem was the fact that I wear aerostich pants most of the time. When I wore leather, it was less of an issue, but still there. My new seat is sitting on the bike, begging for me to ride, but the weather and road conditions are conspiring against me. We got another 8" of snow last night