Re: Which digital SLR?
This is an old thread but I'll post anyway because these topics tend to remain of interest - especially since camera technology is always improving.
I use a Nikon D200 with a battery grip as a main camera and a Nikon D70 as a backup. I'm actually not thrilled with the quality of the D70 but the D200 is a wonderful camera.
I would love to buy a D300 because, among other reasons, it has a CMOS processor rather than the CCD in the D200. To me, the CMOS processors shoot a warmer photo, much like Fuji Velvia v. Kodachrome in the film world. While there are many ways to manipulate digital photos in post (and to some degree, even in the camera), I shoot often and I shoot a lot when I am working, so having to fool with a bunch of photos is not practical for me. Its much better to just get what I want in the first place.
I think, however, that I will end up buying another D200 so that I can leave a long zoom lense on one body and a short zoom lense on the other. This allows me to work quickly and effectively when shooting wildlife and scenic work. It also minimizes problems with dust on the sensor by not opening the body during lense changes. The advantage to staying with the D200 is that the cameras will be identical in layout (thought the D300 is very similar) and function, so I won't have to mentally switch gears when moving from one body to the other.
As to Canon v. Nikon, across the complete product line of each manaufacturer, I don't think one brand has a distinct advantage over the other. Both are quality products and serve their users well. I actually shoot Nikon more because I always have, going well back into the "film days," and have become used to the way they lay their bodies out - I just like the button and "gizmoe" arrangement better.