I finally got a 5D mk III (for $2700!!) and am really liking it so far.
The 61 point auto-focusing system is dope. I've only had it for a week but AI-servo with 61 AF auto tracking is really really good.
If you are into video - the audio solutions are much better now. I'm selling off my Zoom H4n and thinking about getting this guy: JuicedLINK RM333
Just mount it on the mk III, set the camera levels low and boost the gain on it with a XLR mic like Rode NTG-2 and viola - Audio that is a million times better than in-camera stuff. Also no more SYNCING IN POST!! I hated that shit.
Nice. And yea I was thinking about doing some video as well. At the moment I'm having to hire freelance videographers to join me on wedding shoots. But I find it easier to find other photographers than to find DSLR/Steadi Cam (etc) using videographers, so in certain jobs where I can't get a videographer I might just do the video side instead.
I have a friend who freelances in videography and post production and he's doing really well at the moment. Might ask him what equipment they use, but I know they're in to some heavier stuff now.
Let me know how you get on with that RM333, because I'm at that point where I'm still taking it all in on the video side. Do you use a steadicam unit of any kind yourself? Or all tripod?