Ok I have a 98 kdx 220 now, thinking about switching to the kx250f. questions, I'm 6'0 190(without gear) what can I expect as far as hill climbs and mud bogs with this bike ? How does it compare with the kdx ? ie power,rideability, reliability.I had an xr 250 that was about as reliable as you could get how do the new high rev 4's stack up ? What kinda maint ? any ex-kdx'rs out there wanna help ?