I am looking into buying a 450r or a 400ex . I currently ride a 250x slightly modified. It will go to my wife when I purchase my next atv. I mainly ride trails and occasionally we go to the track but mostly stick to riding in the woods. I have heard that the 450r has very long gears and are difficult to ride on trails with. I was wondering if I dropped a tooth on the front if that would help in the trails and how it would affect the over all performance. The 450r would have a hrc kit and slip on also. Then if I went with the the 400ex it would have a full exhaust, jets,filter, and lid removed. What would be the best route for me? (Have not rode the 450r yet but have rode a modified 400ex)