i just got into dirtbikes this year, and bought a 2006 HONDA CRF250R after hearing that 4strokes are more reliable, and less maintenence. i was perfectly happy with my bike UNTIL i had a chance to ride on some 2stroke bikes (RM 125, and a YZ 250) now i really have no desire for my 4stroke any more! now i'm stuck with the bill of the CRF, sucks! the CRF is a good bike, and a lot of fun, but... just doesn't compare to the feeling of the 2stroke bikes! the YZ gave me wicked arm pump but, wow! i had a blast! my girlfriend is also ready to trade her 2006 CRF100F in for a KX85.
here's a video of me, and my girlfriend when just got our bikes (we've definantly have improved since then... thanks to haveing our own track built in the back field)
http://www.youtube.com/watch?v=L1cJwnQ2eIw
ENJOY!