I am sticking with the M6+ because, even though it is badly let down by the software and the manufacturer's possibly flawed social media concept, it still seems to me to be potentially by far the best camera for the money. I also have a very cheap camera in the Jeep second car. It's great value, but the resolution is less good, there's no gps (or wifi), access to change sd card is difficult and it came with a cable that didn't quite reach. SD card access seems a problem on many cams I looked at.
The M6+ firmware and app still seem to be under active development. A Mac and/or PC program that enables full data to be pulled out and presented as a file in evidence needs to be written or commissioned from someone by ddPai, but for now it is fairly easy to combine the video files into a playlist for, for example, VLC player, and this presents a video with time and speed info, but without other data and maps etc.. Hopefully ddPai will eventually show sense and sort out serious software.
What convinced me that I needed a gps dashcam and made me go for this was not just accidents. In the last few weeks, family members have encountered the following:
1. Daughter in a taxi found themselves on deserted motorway. Stopped and site foreman accused them of ignoring closure signs, threatened huge fine or prosecution costing taxi driver his licence. Heated argument, then foreman led hem to safety off motorway but, as they left, apologised that his diversion-marking vehicle and driver had admitted leaving position. Camera evidence might have been vital if he had not backed down.
2. Police notice for speeding at position and time that the driver had remarked to his passenger that they were well withing the speed limit, but the overtaking police car was not.
3. My car parked outside house facing down road soon after fitting the camera. Next door house up the road burgled between 12 and 2pm. I was able to step through the parking time lapse videos and pull out stills of everyone walking up the road during those hours. Unfortunately, the only doubtful looking person was identified by my wife as the local priest. If only the car had been facing the other way it would have covered the house entrance .......