Don't be so quick to dismiss the FF sensor because of DX lenses. The first thing I did when I got the D3 was disable the auto DX crop and shoot with some DX lenses. You can actually get full frame coverage with them throughout much of the range.
Even when you start loosing the edges of the frame to the smaller image circle, there is more usable picture there than with the auto DX crop.
There are some pictures (with EXIF) that I used to illustrate a discussion about this back then here . . .
http://www.pbase.com/jimpoor/tests_and_comparrisonsThe top 5 or 6 shots on this gallery.
I'll try to get more specific later on, but now I'm off to bed.
