I'm sorry, what about the 1Dx says low res? How many megapixels do you need?
More than 18.
The 1Ds3 sold pretty much on account of it's 21MP, which was high for its time. The 5D2's resolution almost singlehandedly killed off MF film for colour photography. These people bought the camera because they print large and highly-detailed photos - not for frame rate. And, in an update, we'd expect more resolution, more detail, more colour depth, more bit depth - not just the same thing, except faster. If we wanted speed, we'd have bought the 1D3 or 1D4 in the first place.
There's no real successor yet.


I want this camera in time for my florida trip in May...
