i'm 5' 105 lbs and handle my 600rr just fine. i wouldn't call the 250r a toy bike, i rode a dr200se for a year on the street and that was a toy. this definitely has more power and is smoother. i rode the old body ninja 250 and that definitely felt like a bicycle with a motor. but a small light bike for around town is perfect. i don't plan on taking mine to the track or on mountain runs thoughNo, I'm not looking to buy big. Being 5'5" and about 135 soaking wet, I don't want to ride atop a wild beast. Biggest I will ever go to is if there is ever a Ducati Diavel 600 (fat chance, but a GORGEOUS bike!).