單鏡反光機 - Nikon D200

D200 body around $9,000 ~ $10,000
You ask for 新手up grade.. what are you have??

For me.. I use D70 since release... so far for me good enough... what are you not happy for your existing model you have? Why you are not concern about to upgrade the lens rather than body... and the lens also for Full frame use not DX format.

If you start to use 單鏡反光機, and you also looking for Nikon.. I suggest you to wait for moment.. being D300 & D3 will release around end of Nov.07, you can concern about this model D300 ~$13,000 D3 ~$38,000 if you can able to affort it, just thinking about D200 at that moment... sure the price will drop off...

Please be aware that, once you want to play 單鏡反光機.. you have to spend more other accessories, such as high speed memory card, card reader, portable HD, flash, camerma bag, 腳架 , etc... but the most value of lens also be another investment... for me.. I never buy any NON-nikon lens... I want best quality.... and see for long term... I only have ONE DX lens.. and the rest of lens is normal... 50 1.4, 105VR, etc...

Enjoy!!