I always find it funny when people talk bad about the AF system of the 5DII. The centre point is the best on the market. The rest are a little useless unless under good light. (I have tracked Nascar coming towards me in Montreal, Canada with my 200 f2LIS)
The AF on my 1D4 is junk in low light. As soon as I pass 3200 ISO...my AF will not lock on lower contrast subject while my 5DII will lock on right away. The D3 series locks on without any issues also. (This has been tested in my home under the same condition for all 3 cameras)
Just to point out...since people will have a hard time believing my fact above, I shoot 1D4, 5DII, 24LII, 35L, 50 1.4, 85LII, 135L, 200LIS. In both cameras I use the S type focusing screen.
I have email Canon CPS...still awaiting a reply after 2 weeks!
I am hoping for a 5DIII.
I am wishing for a FF of 24MP, ISO 6400 clean like ISO 1600 (on 5DII), Same center point AF but better side points AF. Same Battery, 100% viewfinder with a good magnification, improvement on weather sealing (rubber gasket instead of foam), same ergonomics, same IQ (this is the hard part), 5FPS, Full HD 24, 30 and 60 FPS with a better rendering. This would be perfect for me and I would pay 3500-4000$ for such a camera.
I am also wishing for an APS-H Ef mount camcorder. Full HD, 24, 30, 60, 120 FPS, B&W viewfinder, XLR sound connectors, Integrated ND's, Zebra, Focus assist, full HD monitor output, 4" LCD screen for focus puller. I would pay 4000-5000$ for such a camcorder.
ENjoy the day!