All of these manufacturers get close to optimum but don't reach it.
3 Blackmagic models and none of them satisfies me completely (stops, sensor size, rolling shutter, weight, there's always something wrong).
2 Kinefinity models and they seem to get it right but, honestly, price is almost double.
x Canon cameras that make the job but not out of the box and not without limitations.
Personally I think that the first company that puts on the market a camera with the following specs:
S35 sensor size
FullHD
12 stops
Raw + ProRes or Cineform
normal SSD internal recording
2000-2500 $ price
will sale tons!
I think none of us needs 4k, nor wants to use Compact Flash, nor wants to buy add-ons to make the camera work, nor wants to struggle with crop factors, and most of all none of us goes for Raw if dynamic range is limited.