I am considering upgrading a from a D7000. At first I was looking at a used D3s currently running around $4000 - $4500. However after looking at the D800 spec's it seems to me that a New D800 would be a better deal. $1000 cheaper for newer technology, I can still use the SD cards I have and the same battery. The only downsides I see are a lower fps and no built in battery attachment for vertical shooting. Any one else considering the same, what decisions did you make?