just had a go of friends 07 zzr1400 and while it was very smooth and handled well it did not seem to have much midrange , had it in 4th at 3000rpm and opened the throttle quickly and there seemed to be a delay in the bike picking up , my friend did say he was having to use the gears a lot more than he would have thought on such a large capacity bike ,he had moved up from an 2000 busa but still. also the riding position was odd as you seem to be perched on top of the bike . so I think if I change the bird ,I will be better off going back to a busa than getting a zzr 1400 .