I wouldn't move to the GH4 or the A7s. The GH4 looks like video. There is nothing in the price range that looks like the BMCC 2.5k...NOTHING. The faults drive me up a wall but the image is unmatched. It's funny to read so much belly aching coming from people who ostensibly have shot on lesser cams image wise (start from dvx all the way up to the 5dIII), and just as many work arounds and growing pains. Straight comedy.