Conclusion: The Canon EOS-1D X is a great choice for sports shooters and photojournalists, but is likely an overkill for most shooters.
Pros: Full-frame image sensor. 14fps burst capability. 61-point autofocus system. Excellent images at very high ISO settings. Built like a tank. Loads of controls. Dual CF card slots. 1080p video capture.
Cons: Very expensive. Heavy. No built-in flash. No headphone jack. Uncompressed HDMI video output not possible. Switching between still and video live view mode is cumbersome.
Conclusion: Canon's latest and possibly greatest EOS DSLR, the 18.1MP 1D X, is one hell of a camera with a price to match. At over Â£5000 for the body only it's really got to hit the spot, or the justification for that kind of cost, even for a working pro, isn't going to be easy.