Danny,
The Nikon D70 (as Alex Mustard, the master 
detailed in his D2X review) will satify 99% of underwater shooters at a much lower cost including the housing. If you shoot RAW as many Wetpixellites do you can easily make stunning prints, create files good enough for any publication and any other use you can think of.
If money is no option then yes, the Nikon D2X and Canon EOS 1 series are incredible cameras. Faster AF (but most won't ever shoot in conditions to take advantage of it) more mega-pixels, pro style sealed bodies and lots more. Just make sure you want to tote one of these plus big heavy lenses everywhere before you commit.
YMMV
David Haas
