I'm about to upgrade my camera to SLR. The trouble is I'm not really sure on some of the technical specifications. I have pretty much set my mind on Nikon and have been looking at the D40x and D80 models. Both of these look pretty similar to me. Does anyone know any big differences between them and, or why I should not get one or the other? (or both ?!? lol.) I am wanting to get a camera to grow into, so to speak, rather than grow out of. Any help is much appreciated!