I'm just getting back into Photography, after a 10 year hiatus. Previously I was using a Canon T90, originally purchased in 1987, still have it, still works but I don't use it much as my eyesight doesn't allow me to focus at acceptable levels with manual lenses. So I've decided to jump on the digital bandwagon. I'm currently renting a 7D from my brother while waiting for the 5D3 or 1Ds4.
I really don't want to give up the depth of field that a FF allows. I had toyed with the idea of getting the 7D, but when comparing equivalent lenses, bodies and prices I just couldn't justify it. A 7D with a 24-70 f/2.8L will give damn near the same focal length and depth of field as a 5D Mark II with a 24-105 f/4L.
The price difference between the two @ B&H is only $300 (priced before the rebate was available). So the 7D really wouldn't be saving me that much over a 5D2 bundled with the 24-105mm f/4L. With so little price difference and no FF, that nixes the 7D.
The first problem I have with justifying the price of the 5D2 is that the auto focus is barely adequate, if dpreview is to be believed. The second is that it's due for a refresh, literally, any day now. I can't justify dropping $2500 on a camera body that is at the end of it's production cycle and hasn't been significantly reduced in price over those 3 years. Realistically the 5D2 should be selling for less than the 7D at this point. The only advantage the 5D2 holds is a FF sensor with a slight bump in Mega Pixels, in every other measure it is inferior to the 7D, I would be very surprised if the 5D2 isn't costing canon less to produce than the 7D.
Being that I'm looking for a FF, the 1Ds Mark III falls in the same camp as the 5D2, the price is too high for a Body that is at the end of its production cycle. So you see, some of us are really getting annoyed at the extended wait for the 5D3 or the 1Ds4. If the 1D4 were full frame we wouldn't be having this discussion, as I'd have already bought it.
TL;DR - Need a full frame for depth of field, can't justify purchasing a 1Ds3 or 5D2 at current prices because they are at the end of their production cycle.