FWIW - I recently bought a Cane Creek Thudbuster. It seems to work great on the road for curbs, speed bumps, etc. The jury is still out regarding off road use. Not really sure if it's as effective considering that the terrain is more variable and you're not sitting the whole ride. Also, from the reviews I've read, some 200+lb riders have had trouble with it. Check out www.mtbreview.com for Thudbuster.