I just don't understand why anyone wants a inline 4 1000cc bike. Tires cost more, plus you go through them faster. Insurance is more. They are hella fast on the street=tickets. On the track they are also a handful. If you like doing wheelies, nevermind, it's perfect. They are definitely good for that. I have a '03 6rr. Prior to that I had a little 400 Suzuki ([:0]) Bandit. Then I stepped up to an 2000 zx-6r. On the street they are all fast. My advice would be the 6r or 6rr. If you go to the track, the slipper clutch on the 6rr is pretty sweet. It saved me from myself recently. Long story short, passing another rider on the brakes, miscounted gears, dropped it down a gear lower than I thought I was in, rear wheel didn't chatter, lock, etc. and I rode away. On another bike, I probably would have had a really bad day.