Or 500cc 2 stroke. The higher cc bikes are generally a lot heavier too, the old power to weight. More weight to try pick up if, eek, you go for a slide, you probably won't have a hope.
i think this was more applicable in the past, the biggest difference is the gearing and mapping but as with the new gsxr 1000 you can choose what map you use by a switch on the bars
you can basically change the power to 600/750/1000 using the switch, when tested on most tracks it was quicker in the 600 mode as you can power on earlier on a corner exit
we are focusing on sports bike not commuters, that said i think a commuter would better suit the guys needs tbh