08 Honda CBR1000RR $7,000 09 Kawasaki ZX6R $6,900 I had a hard time deciding but found a dealer demo 1K for $6,500. I'm no faster on the 1K than I would have been on the 600 south of 70. There is a significant difference between a '04 and '05 600RR, even more so for a newer one. Definitely an upgrade to a newer one but most likely not necessary.