I ride 07' WR450F(AIS removal kit,YZ shrouds,exhaust,no cell motor,no head/tail light) when I go to desert/trail, and ride 07' YZ250F when I go to track. Today, I went to motocross track, but was closed due to a snowfall in the early morning. Then I decided to do some desert&trail riding since the track was within the OHV area, and of course, I didn't want to waste my time and gas spent. This was my first time YZ ride on a desert. I initially thought riding a 250F on a desert would be relatively boring due to 250F not having enough displacement. It turned out that I had so much fun!! I had no fear going first on a desert washboard. It turned well, and had enough power. The rear suspension was a little stiff though. I was riding alone so that I wasn't 100% sure if I was actually going faster than usual(with WR450), but I definitely felt I was able to ride with less effort. I was not sure if this was due to YZ being 250(lighter) or Motocross models are generally better for desert/trail riding as well as track riding than Enduro models. I also didn't go gnarliest trail so that I am aware that I should not conclude that Motocross models do a better job on a desert. I questioned myself if I really needed to own WR450F when I was riding my YZ250F today.