D90 stolen, what next?

My D90 setup got stolen.

I am looking for a replacement. While an obvious next step is a D7000 I am intrigued by reviews talking about high ISO performance and want to know if anyone here is a former Nikon D90 (or D??) user.

A camera is not only the body, it's the system - lens, flash, etc.

If you made the switch or have both a Nikon and a Pentax SLR, I'd very much appreciate your opinion.

Thanks,
Amnon