Dash cams what are yiu using

trying tofind real info on dash cams and it is full of add on junk and there seems to be no real info as to what is the better unit

We have the Garmin 67W. We were looking form something that was smaller. Others that we looked at were just too big. We have only had it for a short time and have not played with it much. We wanted it for evidence in an accident. We are not looking to record trips or scenic drives etc.