I want to get a new desert bike next season.I got a while to go but i want to start planning now. Bike will be used for all types of desert riding and some D38 racing as well. Right now i ride a 2000 CR250R and a 2008 XR650L. What would handle the large whoop-de-doos better and be the fastest? XR650R or CRF450R or X.