I shot with the BMCC for one weekend and the resulting files were ridiculously huge and my 3.4 i7 iMac with SSD's/32GB RAM/2GB Video/Thunderbolt Drives could barely even play them. I wouldn't shoot 2.5K on that thing unless I was trying to make some award winning stuff, it's just not worth it.
I'm assuming you had the iMac with the AMD GPU? I hear that Resolve really requires Nvidia. I've heard that the new iMac (late 2012) runs the RAW files very well. I hope so, because i just ordered one, after taking a very long hard look at Windows workstations! Please let me know if i am mistaken.
To me it seems like Blackmagic Design priced the production cam that way to discourage people from buying the BMCC. They are taking the old BMCC bodies, putting in the new sensor and slapping a 4K sticker on it and taking the old sensors and putting them in the Pocket cams, it's pretty genius really.
Either way any of the cameras mentioned here can produce great images if used correctly, but the BMPC has the specs I've been looking for and at a ridiculously low price.
I agree, however, I think it is quite possible that the $1000 difference between cameras will be pure margin for black magic. In other words, the components of the BMPC will cost the same (or less) than the BMCC. But that's pure speculation on my part.
My biggest fear is that the 7D2 will do something like full raw recording for 30-60 seconds. I would have jumped at something like that. I love my 5D2, and always will, so I'm really hoping that Canon makes a comeback.