Also, on the topic of insurance, there's absolutely nothing an insurance company would see on the driver facing video that would be to your benefit. They'll claim you didn't look down at the speedometer once the entire drive before your accident and therefore they believe you to have been speeding. This also applies to law enforcement in my opinion. Everything you say / provide can and will be used against you.

A minor detail is also that with additive cameras, a portion of the front view is obstructed in the recording by the rear view. Maybe this is circumventable, and they save as multiple files independently, I don't know. The resolution thing bothered me more.

Personally, I don't have rear specific cameras. All of mine are the 129 Pro model, each set to the same video settings. I'm kind of particular and wanted full 360° coverage, so each of our vehicles have four cameras, front, rear, and both sides. Obviously not exactly economical to start out, but one of the side cameras already paid for the entire camera set up in a sense as it captured someone breaking into a neighbour's house and lead to arrests and prosecution. I call that a win.

That said, I do regularly turn the mic off when there are private conversations taking place, and this is important enough to me I feel it's worth mentioning.

Not all, but some cameras, including Viofo, also have motion sensing abilities, so they will record a set length (5 or 10 minutes) after they see something move. These tend to have sensitivity options which is great if you live in a windy area with trees, because then it'll basically be on all night.

There's also just a time lapse option for when the vehicle is off, and the camera will just take a low frame rate video - as in 10 frames per minute - and kick up the frame rate if it sees something or experiences movement. In my mind this is the best of both worlds, so this is what mine are set to.

That said, I do have the GPS coordinates displayed on mine. In the event the vehicle is stolen and found ditched somewhere, there's a slim possibility the coordinates could come in handy. Unlike the speed display, the insurer would have to calculate travel speed based off changing coordinates which would be changing at a non standard rate. I find this an acceptable hurdle that an insurer would not traverse.

If you are ever involved in an accident, don't say a thing to anyone about the video evidence. Best case scenario, it throws a would be liar a curveball and they admit whatever fault is theirs. In my opinion, it's not worth bringing up because of the risk that someone is desperate enough, they might try to commandeer the camera from your vehicle. This also helps trap someone in a lie should they go that route.

This way if anyone sees the camera in the windscreen and removes the card or even the entire camera, I'm still covered. These extra cards aren't huge capacity, maybe enough for an hour of footage.