I really like the
Vio Pov 1080p camera. There is no fisheye and also has a remote microphone that you can route up to the helmet in order to narrate your video in real time. This could be a quite entertaining or could be irritiating too. I don't particulary like the hard line tether from the camera to the DVR, but I believe these are the best action cams on the market right now. Downside is the Vio is pretty pricey.
The video rendering on youtube is pretty awful, upload time is dependent on file size and the speed of your internet connection. I feel obligated to say that for most of us buying a 1080p action camera right now doesn't make a lot of sense. Go to the vio website and try to watch the movie in 1080p. My DSL connection is not good enough to download that video fast enough to play it although I can tell the camera makes an awfuly nice 1080p video. Nothing wrong with any of this I'm just saying that when buying a HD action cam you will have really good videos to watch at home on your DVD, but your ability to share them on youtube - at least in HD is greatly diminished.