ive had 3 bikes, the YZF R6, the GSXR 600, and the honda CBR600 F4I...i would look more into the Yamaha, it handled better, had better accel and i was much more comfortable on the R6...If you are looking into the honda, then look into the CBR600 F4I...I really liked that as well, but the performance of the R6 is amazing, and you can also find just about any part to modify them...in my opinion those 3 bikes rank as 1.Yamaha R6 2.Honda CBR600 F4I and 3.Suzuki GSX-R 600...but thats just my .02