I use a Blackvue DR500GW which I swop between cars. It's not the cheapest but it's fairly unobtrusive and quick & easy to take out/in from its windsceen mount. I also like the wifi function allowing connection between it and my phone. It can be hard wired but I just use the rear cigarette lighter socket and run the cable under carpets and trim to the mount. It has recorded some interesting events over the last several months.
One thing to remember is that a dashcam is a video record of your driving behaviour, speed etc........................... I leave mine in car park mode during the night so that it over writes the memory card just in case I might have exceeded the speed limit by accident at some stage
One thing to remember is that a dashcam is a video record of your driving behaviour, speed etc........................... I leave mine in car park mode during the night so that it over writes the memory card just in case I might have exceeded the speed limit by accident at some stage