Ok, I am a bit big for a 250F (190lbs) but have been very competive on this bike. I have absolutely no complaints. I messed up and rode a YZ450F and now my 250F feels like a TTR125L. I havent rode an '03 250F (I was planning to get one until this point) but I now have a crack-like addiction the insane horsepower of the 450F. The bike's weight and starting proceedure is finally under control. If you weigh more than a supermodel, go try your buds 450F just once.