After many rocky miles, the U-Turn feature is still working perfectly on my 2005 Pike. I like the adjustment option for different trails because there's quite a variety of terrain in my neck of the woods. You need to be wary of your frame geometry, however. Some frames can only handle 20mm of travel adjustment before you start running into handling and structural issues. Check the manufacturer specs to be sure. If you're comfy with a set travel and the trails you ride are the same terrain, or if you're bike isn't designed with a wide travel adjustment in mind, then you probably don't need it. Otherwise, I say go for it!