You should talk to Garret. He's been targeting the 3d plank guys so his selection is half way there. The sizing is the outer dimensions so if your not used to that, it's deceiving..
I got an under gained flight with a sticky gimble recorded with em so far. I would by no means consider this as good as they can do, but check out the begining/ending and the sound they make. it was too windy, rigs not tuned yet, first goes at manual mode flying, nex5 a with a non ios pancake lens
You can see the motors smoothness when the gimble bottoms out showing the landing gear.