#1. "RE: Should I upgrade from my D5000 to the D7000?" In response to In response to 0
Tallahassee, Florida, US
>... Is making the investment in a D7000 worth the extra features the >camera has?...
The most common answer Nikonians give to a question like this (and, I think it is the correct answer) is, what would the D7000 allow you to do that you can't do with your D5000? If you don't have a specific answer about how the D5000 is holding you back, and how the D7000 would help that, then I'd say you should stick with your D5000 (which is a superb camera).
>... would it be better to move >to the D700? And, could I use my current lenses and flash with >a D700. I don't know if I need or should move to an FX...
Your 18-55 and 55-200 are DX lenses, so would only work on a D700 in crop mode. That's a compromise you probably would not like. Your 70-300 and flash are fully compatible with the D700.
As far as moving to FX, I'll say that personally, I don't want to, because a DX kit is smaller, lighter, and less expensive for the same type of photography. But, if you want absolutely top quality equipment (and are comfortable paying for it), FX is the way to go. Only a few years ago, though, FX didn't exist and everybody, including top professionals, were shooting DX. I understand the allure of really nice stuff, but you can get so much out of just the equipment you already own that I would advise against moving to FX unless you can articulate a good reason for doing so.
If you really want to get more stuff (you don't need it to take better photos), I'd look into getting additional lenses for the camera you have. But, you didn't mention this, and until you want to do some stuff your current lenses can't handle, I'd even say you should wait on this. Your motivation for buying should be "I want to do ??? and I can't with what I have, so I'll buy ??? which will let me do that."