The non-stabilized camera is a lower profile, lighter, cheaper and more rugged vision solution. It is adequate for a number of applications, e.g. flying of missions, cargo drop, inspection of equipment, law enforcement, etc. If you already have an aircraft with a digital video link, then you can buy the analogue version, and still use your existing digital down link. Get the digital HD video link if you require HD live view. Get the analogue version if a more grainy, but very low latency live view is adequate.