The Canon EOS 1D Mk III is perhaps the most technologically advanced Digital SLR available today. This isn't based on just one feature - such as the ability to capture at 10 frames/second - but rather on a whole host of features which are improvements on the Canon EOS-1D Mark II N (review)
The EOS 1D MKIII is aimed at the professional photographer who needs to record fast action in all types of conditions. The shutter is rated for 300,000 cycles (more than any other EOS SLR), the camera is weathersealed (as are many EOS "L" Series lenses and the new 580EX II speedlite), the buffer can store over 100 large jpg files and with the ability to capture at ISO 6400, the EOS 1D Mk III can continue taking pictures when lesser cameras have given up and gone home! Read the whole preview here