Well, the Karizma is out of the question as it's 225cc but has only 17bhp. the R15 is India's first racing-tech bike and has soft compound tyres that grip the road more effectively. It is built on the R125 DNA and Yamaha has done a good job at it too. The P220 is the high end bike from Bajaj and is good for rough use. We use one regularly to do stunts like popping wheelies, burnoutz, endoz, etc. the R15 will not be able to do stunts easily as it's developed keeping the track in mind. 8-)