ok 250cc is call mini superbike..
previously i had zxr-250 which is much more superb then this new250cc 2008 model..
it depends on your budget how much are u willing to go...is it just for fun,track days or working?depends..or u can buy the second hand 1st gen zx250.
u can check this website to ask around..http://spitfirebikers.fullboards.com/

cheers and good luck...if i were u i go for honda cbr 600cc 05/06/07 model..but its more then your budget la...but worth your money la...heheh