gixxers are the most common, and more versitiel for the shorter wheel base, and the 600s class is lighter for the class the r series has the power to get up. Just make a few power add ons. Exhaust,air filter , plugs,even a power commander. On my zx6r i got all power commander upgrades with exhaust, air,plugs,full throttle cluchless shifter,remapping. Stoke 118 stallions up 162 stallions thats huge for a 600. PS. good breaks well be a good investment hope u have good luck.........