i've got one on my commuter but I actually only bought it because it was on sale for 14.99 minus the nashbar coupons . I was still building the bike at the time and I actually don't have an extra rigid seatpost. Its not that bouncy as long as you set the rebound/preload to almost the most stiffest setting. My bike is an old 80s Scott mtb based off the Muddy Fox and Rockhopper frames, which were basically small touring frames. I would never put one on my road machine as they are probably 3-4x heavier than a normal post and high cadences tend to make your arse bounce off the saddle.