Video can't be recorded (alas), and it's not nearly discrete enough for that, you can hear it coming a mile off.

These have been on sale in Europe for a couple weeks already, and they are a hell of a lot of fun. Not cheap, granted, but a wonderful toy to fly around the garden.

At work we have a selection of all three of those brands. I personally prefer the Tekronix interface, as I find it more intuitive