I'd get a 500 as a starter bike. 250 can barely get out of its own way. And really some 600s are good starter bikes, but new cost ~$3k more and have higher insurance than a 500. That's why I say (and eventually will do) start with a 500.
98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)
FS: SVT rear sway bar
WTB: Very cheap beater
CEG Dragon Run - October 13-15