you'll love the cbr250, then. it's so agile. i thought my wife's 250cc scooter was nimble, and then i rode the cbr and am all I KIN GOOOO ANYWHERE. on my current bike, which pulls down almost twice the curb weight, i need parking lot STRATEGIES.
that said, NOTHING beats getting out on a clear twisty stretch of highway and twisting the throttle, hearing the engine instantly roar, and shifting with real DRAMA. that's motherfuckin' LIVING.