One other thing to consider is those pesky MP (Megapixels). I don't want to get into a discussion on the value of MPs or that MP isn't everything, Duh; but anyway:

D90 DX = 12.2 MP
D7000 DX = 16.1 MP
D700 FX = 12.1 MP
DX = 5.1 MP
D600 FX = 24.2 MP
DX = 10.3 MP
D800 FX = 36.2 MP
DX = 15.4 MP

Another thought if you are considering biting the bullet for what currently is arguably the best DX camera in Nikon's lineup, DX7000; there is the highly rumored D400/D7200/D7300. In my opinion, that should be announced no later than spring of 2013. Then you would have the opportunity of a better DX camera or less expensive new or slightly used D7000. I jumped for the D7000 because I needed it for a particular event.

In my opinion, I think that I would be very unhappy shooting with a DX lens on a D700. In my opinion, if you go D700, you should be thinking FX glass. Can 5.1 wonderful MP be better than your current D90 12.2MP?

Charlie

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