I use the Nextbase 402g. Have done since it was current tech, about two years back.
Quality of footage is really good, plus, I had reason to fall back on the footage after some nobber came up the inside of me and wiped out all the plastics/lights on the front n/s corner of the unit I was driving. Thankfully the camera made sure I had nothing to answer to and the company which owned the other vehicle settled immediately once they saw a copy of the footage.
This cam takes either 12/24v and as it takes just a minute or two to set up I never drive a truck without it.
Can’t recommend it highly enough.