The GoPro HD is a good camera for what it is, but depending on your needs it might only be a partial fill. The GoPro is a very simple camera, it uses an aperture of 2.8 and a very very wide lens that is fixed, so wide that it has a hyperfocal point of 1 foot meaning it doesn't need to focus. This makes for a real good camera for closeup shots but it can't zoom in. The audio on it will be extremely amature, it uses a tiny omni directional microphone and a crappy AGC system. The GoPro is a good cheap camera to beat up but it is meant to fill in what can't be done with larger cameras.