"Still love my D200, but the low-light capabilities aren't even close to current sensors (even on modest cameras).
I need a Bruce Banner sized camera body, but with a Hulk-sized sensor! ;-)
And the upcoming Sony NEX-7 may indeed be it, a pretty comprehensive review of it here: http://www.stevehuffphoto.com/2011/10/23/the-sony-nex-7-digital-camera-review-by-steve-huff/

This NEX-7 is not much bigger than my GF1 and is, for the first time, a reasonably compact camera serious enough to potentially replace all my 'Big Iron' Nikon gear."

"+David McDonald Yuppers. :) I wanna get something with a newer image sensor, but nothing out there really speaks to me right now."