Hello - I'm thinking of buying a second camera body for travel and general backup. I currently have a D90 and will almost certainly be staying with DX for the mid-term if not long-term. I've been looking at the D7000 as an option - I like the idea of 16 megapixels. But, I've also considered the D5000 and the D3100s. To be honest, I'm also considering a second D90 - same battery and no new menus to learn.
I'd go for the D7000. Just got it last Thursday and love it's compactness (coming from a D300), quietness, and I believe the image quality is the best currently in Nikon's DX line-up, with regard to higher ISO.
I am definitely NOT shooting professionally - neither by intent nor result. I suppose I've read about the need to have a backup camera body in case of damage, loss or theft and it has me thinking about a second camera. I also do a good bit of wildlife photography in very dusty climates - occasionally in wet ones as well. It would be nice to have two bodies with different lenses to minimize changes in dirty places.
I love the D90 - it's a great machine and I wouldn't mind at all having a second one. But, I am somewhat intrigued by the high MP count of the 7000 (pixel-envy?) and the higher ISO would be helpful also. I appreciate the input - I was only considering the 5000 and 3100s for budget reasons. I think I'd rather wait until I can afford either another D90 or D7000 body.