Arrived today (courier misplaced it yesterday...). Needs a big room, especially when you are new to the model. Have flown it inside a couple of times and outside once this afternoon. Really stable, need to get used to the controls so basically all my flights today have been basic and concentrating on keeping landings soft. Quite different to my 3 channel cheapie as this has roll as well as yaw.
Build quality seems good and can survive a few knocks. Got an extra battery on order