Well I like the old styling of the ZZR. It has actual shape, working fairing rather than the minimalistic/ ultra shrink wrapped look so popular today.
It is a 600 so you can take trips without much concern for fuel mileage or planning your stops around which bike shop will be open to swap on new tires.
Pillion accomadations are actually workable, not like the mouse pad seat on the current RR crop. Rider ergo's are a little more humane, I mean I can think of a hundred reasons to buy this over say a standard like the GSX600F, ER6 or FZ6, hell even the FZ1, VFR or modern suspersport.
I can turn exciting lap times at any of my local tracks stock as it sits, Ebbs bike held up to his debauchery just fine save that last loop and I really don't need anything more.