Which DSLRcamera to buy?

I've been studying photography for a while and want to buy my own DSLR camera, which one is best to buy Nikon D3000 or other Nikon models, I want something now extremely expensive but somehow manageable, but I want really good quality for nature and scenery photography… Any suggestions?

I like my D200

Used nikon D200 and a used Sigma 24-70 f2.8. There, you have a great kit for not too expensive!

I would suggest purchasing a Canon t2i. This camera is superb and is in a good $800-1000 price range. It is the best entry-level DSLR available on the market right now and packs a lot of awesome features. The basic kit comes with the T2i body and a basic 18-55mm IS lens. However, since you are interested in scenery and nature I would suggest getting a telephoto lens which is more suitable as it can zoom a much longer range than the basic lens. I currently have my T2i set up with a EFS 55-250mm lens which is excellent for nature photography because of its great range.
I would also suggest picking up a few filters (around 20 bucks each and definitely worth the price) such as a UV filter and a circular polarizer filter, which is essential for scenic photography since it makes the sky look drastically better and is also anti-glare. A UV filter is just something all photographers should have. It acts as a protection for your lens and also gives your photos a sharper look.