Best Professional Digital SLR Cameras

Professional photographers require a level of customization, performance, and ruggedness that's at least a notch above what consumer dSLRs provide. Compatibility with a broad range of accessories and studio equipment is also a must. If you have professional aspirations or are a seasoned pro going digital, these are the models you should consider. They require a serious investment, but in exchange they'll give you state-of-the-art imaging technology and the breadth of creative control you need to produce professional results.

After extensive product testing, Which Digital SLR Camera? has named the following DSLR cameras the best and top-quality professional DSLR brands and products for advanced photographers:

Canon EOS 1D Mark III
Canon EOS 1DS Mark III
Nikon D300 DX
Sony Alpha A700
Olympus Evolt E-3
Canon EOS 40D
Pentax K20D
Canon EOS 30D
Canon EOS 5D
Nikon D200

I have been using and been very happy with the 30D for a while now. I might upgrade to the 5D, but probably keep the 30D as a backup.