250 is shit dont waste your money. You can kill yourself on any bike so get a bike that is suited for your riding style and body type. If your a short asian dude that weighs 150 pounds get like a 600. If your a fat tall white guy like Dirtylove get a 1000. If you like to ride in streight line get a 1000, if your more into moutains and shit get a 600.......
I personally ride a stock YZF-R6.