I used to have full suspension gt. the ride downhill was plenty smooth but I didnt like it for climbing. first off it was crazy heavy but even worse was the "bob" as pedaled. I sold it and bought a hardtail w/front suspension only. much nicer, much lighter. I rode that gt back in 94-97 and havent riden any "modern" full suspension rigs, maybe they corrected for the bounce by now.