Hm..., this video I filmed at the start of the year, still pretty new to flying quads. It was filmed on a CX4 (WKM) GoPro v3 (White). I like it more 6 months on, don't know why?! Quality is way above the results I get from my DJI450 (Naza 1), although I use the 450 mostly. I think you can get scared of losing these things (£2000+ on this beast alone), all the money invested, it can be a leveller, and a 'fun killer'! You can lose something this size 40ft away in a field of long grass, in a moment's lack of concentration, so maybe having 2 is beneficial? Set them on different vid freq's and you can go look for the lost one (when it happens, it will!)
"http://player.vimeo.com/video/59301742"