David,
Another thought on the D200 and the D70. I shoot stock for Getty images and their
standards are pretty high in terms of acceptance. Last December they announced
that they are accepting images shot on the D200, a 10.2 megapixel camera yielding a 26MB file. I shoot with both the D2X ($4,500.00) and now the D200 and find the
D200 much lighter to carry around when shooting personnel travel photography.
By shooting both the NEF (raw setting) and the basic jpeg at the same time you'll have
Jpegs to view quickly on set for your lighting concerns as well as having a large file which you can later blow up pretty big for a photo show, or submit to a stock house such as Getty.
Jeff Cadge