Upload & Sell: Off
Anthony: judging but what you said that you are usually shooting I would either:
a) stick with 5D and invest in glass (btw what glass do you currently have?)
b) if your pocket is itching, the only reasonable upgrade for your type/style of photography is the 5D mark II .
Don't think about 1D mark II / mark II N or 1D mark III.
They are amazing cameras but not for what you're shooting.
Also, don't think about 1Ds mark II. For what you're shooting,the 1Ds2 is pretty much a 5Dc IQ thing in a 1D body.
I had 5Dc, then moved to 5D II & 1D2, and now I'm back on 5Dc (financial reasons).
For landscape/portrait & still stuff, there is really no need for 1D APS-H bodies (nor for 1Ds 2 FF).
BTW, about the 1D3, in terms of IQ, the 1D3 is very close to 5D mark II (in my opinion).
For my style of shooting, if I had the money, I would go for 1D3 in a split second.
But for what you said you usually shoot, you don't need to complicate your life with 1D bodies.