Wingo I would stay with the D90. This shouldn't even be a question unless you want to upgrade to a full frame camera..... possibly to the D700 replacement(whenever that comes out)!
While the D200 was and is a great camera but it was replaced by the D300 if I'm not mistaken 2 years ago.
Here read this>>>>>
[FONT=Arial, Helvetica, sans-serif][SIZE=+1]January 2008: [/SIZE]The D200 has been superceded by the far superior D300, even though you certainly buy all the new D200s you want. This review is now an historical artifact, mostly written back in 2005. 2005 is ancient history in digital camera years. [/FONT]
AccessoriesLens CompatibilityMoviesFluffLenses The Nikon D90 is a fantastic camera. It's Nikon's newest and best DX format DSLR. I prefer it to the old D300, which costs almost twice as much. That's the way it goes with digital cameras: new is almost always better, even for much less cost. The D90 has identical, or slightly better technical image quality than the D300, the exact same rear LCD, and adds several very useful ergonomic features for faster handling compared to the D300. These handling improvements will let you react faster to conditions, meaning you're more likely to get better pictures by being better prepared. If you're considering a D300, forget it. Get the D90 instead. The Nikon D90 is Nikon's newest and smartest DSLR. It has the same or better technical image quality as the D300 that costs much more, and it handles better and it makes movies, too! The D90 is newer and better than the D300, for a fraction of the price, so long as you prefer the D90's lighter plastic body. Let's be honest: I've used my plastic D40 for years and it still works like new, so I don't see any reason to pay more for a D300's metal body unless you're shooting sports all day. All these cameras have metal lens mounts and are built to very high standards. The more I use the D90, the more I like it. Compared to the old D300, the D90 offers the same or better image quality, with many new features, in a lighter plastic package with the same vivid and accurate 3" LCD and a much improved rear multi selector for faster handling. The D90 also has better ergonomics than the D300 and D3, so it's easier to get where you want in the menus faster. The D90 is super easy to use. As Nikon's newest camera incorporating over 60 years of continuous innovation, it's got more clever features, like a multiple-shot self timer, and a 72-image and calendar display if you keep zooming out on playback, than any other Nikon to date. It all works intuitively, and unlike the D3 and D300, I can operate everything with one hand. I have to waste a frame to shoot a picture to get it to play images if I can't hit the PLAY button, but I can get to all the menus and everything when set up as I like it in just one hand. The only thing I miss from the more expensive D3, D700 and D300 are the option to set instant zoom on playback when hitting the OK button, and I do miss the 5:4 aspect ratio crop from the D3. For you techies, as you can see at my Nikon D90, D3, D300 and D200 Sharpness Comparison, for use in daylight, the D90 renders images identical to the $5,000 Nikon D3. Of course the D3 shoots faster for sports, but the images are as good, the rear LCD is identical, and the D90 has a few new convenience features that weren't invented back when the D3 came out. Also for you techies, in my Nikon D90, D3, D300 and D200 ISO 3,200 Comparison, I discovered that the Nikon D90 is even a bit better in low light than the $1,800 D300. The D90 is worlds beyond the old first-generationD80, which it replaces as Nikon's mid-line DSLR.The Nikon D90 is a D80 with Live View, ADR, an almost three-dimensional 3" LCD, it can shoot movies, and has far more advanced ergonomics.
IMO just stick with the D90. If you don't want it I'll take it so my wife can have it instead of using mine.