I have always been a Gixxer guy, but I did stray off last year and went with an 04 ZX10R. It was a real nice bike, but I still missed the feeling of the Suzuki. I now have an 06 1k and im loving it. Dont get me wrong, the ZX10R was a bad ass bike, real "raw'. They actually made them more controlable with the new model, but from what I understand it took alittle away form the bike. The plastic on my 10 sucked ass though, I had 3 tails crack on me, and they were not abused in any way that should make the crack. I also had the front fairing crack, which supports the entire headlight assembly on the 04. I jsut didnt feel like it was put together well in that aspect.
That was my long winded way of saying go with the Gixxer, you will be happy.