I have a Garmin (Ill have to find out which one I got, its been a few years), Its not cheap but what untimely made me get it was the fact that they have and will send out one of their lawyers to defend (in court) what is on the camera if it comes down to it. I don't have a link to where I read that but it was on their web site if I remember correctly. Only two issues with it really, nothing big... 1. It can only record in 1080p, it has other options but they are not reliable; 2. When its really hot out it will freeze up from time to time when it powers off and will kill its internal battery.
Again its been at least a few if not several years and I don't remember a lot of the details on it and I'm sure they have a better one out there now but the fact that they will defend you in court is what untimely made me buy it, if I dig up anything new I will update this post but its Garmin so it shouldn't be to hard to find. Not to mention it dose take good video,