Upload & Sell: Off
Wasn't any choice really back 7 years ago (or whenever they were first released, I had one of the first in the UK) when I bought mine, if you wanted affordable FF, and it wasn't that cheap even then, you could choose between a 5D or a, um, 5D. Only other choice then was the 1DsII and as that was still current the price tag was over the $6500 mark (I had a 1Ds original, yeuch).
Now of course there are more choices for FF, I don't know how good the D700 is for alt lenses and a 5DII is built to the same standards as the 5D was (cheap and cheerful) but of course a 1DsII is far more affordable now and even the 1DsIII used to be cheap on the 2nd hand market giving LV and the best tonality I've ever seen from a DSLR, I miss mine, especially as I sold it for a fraction of what the current prices are! . I hear the Sony A850 and A900 are also good alt platforms and by all accounts they have an incredible chip in them, still no LV for alt focusing though unfortunately.
For the likes of me however who had made his 5D's do 6 gruelling years of pro photography including commercial, wedding/event, street, landscape, etc, I suppose it's a case of better the devil you know, a stubborn resolve to bully the 5D into doing the job however lacking the feature set as has been the case with the use of mine for all these years, a very serious respect for what the chip on the 5D can do compared to even modern day competition and finally a serious lack of funds . In all honesty, even if I had the spare $1500 at present, I wouldn't spend it on a 5DII or 1DsII, I'd pony up for the 50L whose wide open look which I couldn't begin to afford drove me to the takumar in the first place. If you could give me the look I'm after I'd take AF any time. MF is for those with better eyes than mine!