Wait a second now. The FS700 internal is ranked, but the A7s 4k HDMI is to an external recorder. So i wonder where the FS700+7Q would fall on your list. I'd definitely place it in that top tier, maybe even at the top spot if this sort of camera/recorder combo is allowed.
I have the Sony FS700. Is it possible that this codec could actually be added to the camera via firmware, to allow us to record H.264 from the 4k sensor without even needing an external recorder?