from someone recently upgrading from a 250, I would say go sit on as many bikes as possible. Don't necessarily go by look, or power, or any of that stuff, just find something that fits your body and feels comfortable for you. i got on a LOT of different bikes and also rode several different bikes and to be honest, the only one that i felt 100% comfy on was the cbr1000 .. so i bought it. Yes, i get a lot of shit from people around here for it and yes i know it was a "Big jump in cc's", but seriously it doesnt really come down to what other people say or think. so like i said....... go out, sit on a bunch of bikes, ride a bunch of bikes, and when you find the one that gives you that warm fuzzy feeling inside...... get it Good luck!