I have the Nextbase one on my Lexus at the moment, getting the same one on the 86. It's ok and does the job, you get an app on your phone to control it which, on Android, works most of the time but tends to disconnect while you are using it.
There is a motion sensor, so if the car is knocked when stationary, like you open the boot

, it records a bit of video. Recording continually overwrites in one-minute clips, but if you press a keep button, it will lock the previous, current and next videos so if something happens, that won't be deleted.
Night video is ok, but it's not infrared or anything. If you can't see something, the camera isn't going to see it.
The install is neat, though, no trailing wires either from front or rear, and the front camera slides out of its holder easily if you want to take the card out.
Probably not worth nearly 400 notes for both cameras, but if it goes wrong then it's a warranty fix.