Upload & Sell: Off
All I can tell you is that after having owned nearly every pro/prosumer Canon digital body manufactured (1DII, 1DIIn, 1DIII, 1Div, 1Ds, 1DsII, 7D, 5D, 5DII), I enjoyed using the 1Div the most.
Fantastic AF, great high ISO performance, enough resolution for very large prints, and I found the JPEG engine to be a huge improvement over previous bodies (the 5DII is also very good).
I never really liked the skintones out of the 1DIII- unless you were bang on with the exposure, the skin tones looked terrible. The 1DIII was not forgiving at all.
If I had to buy a Canon body today, I'd either get the 1Div, or splash out for the 1Dx- even selling an ultra-wide lens that the full-frame body would sort of lessen the need for.