Hey, All. I have just come back to this forum after a few years away and I have jst gone through the same thing. I sold my Z1000 12 months ago and have just bought a 2000 ZX9R. Awesome bike, strong motor, very comfortable and look forward to putting heaps of miles on it. I don't think that you will regret it at all.
I looked at other bikes but the ZX9 seems to be better value for money.
Just my 2c.