I just did some video with my Hero 3 White edition on my E7 at the Heli Extravaganza with no helicopter control problems however I certainly did not get even close to 600' of reception for preview or control as claimed by GoPro using their app on my Droid Razor (I guess sitting on the side of an electric heli doesn't qualify as "ideal conditions.") It was also my first attempt at flying my E7 with a 6S battery pack with head speed of about 1050rpm which caused some frame vibration so the video was pretty poor. I also pointed the camera backwards which made for a cool perspective. I am looking forward to trying it again at normal head speed, let us know how it works for you!