So I am saving for a new camera and I have had my eyes set on the Nikon D90 with 18-105 kit for $1100 ( I already have the NIKKOR 55-200VR for it). I went to the store and held the D90, liked it's layout, and it's very similar features and specs as the D300S which is quite a bit more coin. Seems solid with a good amount of room to grow into. Now, on another forum I am on a guy is selling his Canon 40D and Sigma 17-70 f/2.8-4.5 Macro DC lens with less then 5000 clicks, in perfect condition (according to him), for $850. He just bought the 7D so has no need for the 40. I dont know enough about Canons, or the comparison between Nikons and Canons to tell whether or not the 40D is a smoking deal AND BETTER then the D90. If the D90 has better capability, I dont mind paying the $1100 for it. BUt if the 40D blows it out AND is cheaper, then why not. Please advise on real world comparison and what to expect.