The problem I see is that there is a massive price gap in the field. On Amazon (US) right now you can spend from $49 (probably junk) to over $400 with a lot in the $170-$190 range.
I just purchased the Blueskysea DV688 based on conversations here but it was a daunting decision. I previously purchased a FenLee system that actually works but I can't find anything about them on this site.
I recognize that it's a lot of extra work but I do appreciate the effort everyone puts into the site. My auto dashcams were ordered through here.