I too am contemplating the jump to a D200 (can't afford the D300) from a D50.
Couple of things i'll mention in case you didn't know:
- D200 uses CF (D80 + D300 use SD), so you're going to have to buy a load of new CF cards which adds more to the overall price;
- Battery life of a D200 is 450-500 shots, whereas D80 is 1000-2000 shots. So you're going to need to buy some more batteries, adding more to the overall price;
- Wireless remote (ML-L3) doesn't work on the D200, so you're going to need a new one.
And here are some observations that aren't going to effect price, but outine why the D200 is better than the D80:
- D200 Allows you to stop off ISO at increments (you could use ISO 140 for example);
- D200 has 2-9 frames bracketing (compared to 2-3);
- D200 supports GPS and WiFi (with accessories) which is pretty neat;
- D200 has a much larger buffer (19 NEF compared to 6 NEF)
It's a really hard decision and i'm totally stumped. The D200 is a better camera, but having to buy new memory and a new remote shutter release all adds up. I'm going to wait till the D300 comes out and then just pick up someones almost-new D200
