I personally really like the Mobius Action camera. Use the mount it came with and a 1/4"x20 bolt and bolt it to a old hat and it makes the perfect hat camera. Here is a video I shot with mine. Excuse the crash at the end LOL
I have not shopped for one for a while, but for filming a flight from the ground, you would need one with a zoom, and a view finder: it can be challenging to shoot on a bright sunny day without the view finder.I need to purchase a new Video Camera and don't have a clue as to which one would be the best for videoing R/C airplanes.....your suggestion(s)............I'd like to keep the price 'reasonable' for this part-time use.
Thanks,