Upload & Sell: On
Ian -- I think you are dreaming if you think any of the three (1D2, 1Ds2, 5Dc) will beat the 7D or even 60D for ISO 3200 noise, resolution and color. I'm not saying the 7D and 60D are amazing at that ISO, but better than these other three.
I currently own "the three" plus the 60D. I find all three about the same for noise, but the 16.7MP 1Ds2 has significant edge in resolution, making the noise appear less. The 5D is in the middle, as its 12+MP would indicate. I don't like the noise of any of these three above 800, but find 1600 my limit outside of emergencies. The 60D is as good or better than the three at 1600 compared to their 800.
Given the choice, I pick either the 1Ds2 or 60D.
That said, if you have a fantastic deal on a 5D, you should go for it. It is a great camera, just not at its best at above ISO 1600.