so out of curiosity I started looking at old 1 series bodies (1D, 1Ds specifically). I am curious as to why they seem to be so sparsely for sale. did they reach the end of their life span already? Or are people just hanging on to them? Have I missed the move from the mk1 to mk2-3 so those who have them now are not so much the pros but the amateurs who couldn't afford them when they came out? It seems to me that someone like me who shoots with an XTi would benefit from an upgrade to a 1D mk1 or 1Ds Mk1. I would like your thoughts responses to all these random musings!