Before I tell you what I got I'll say this, watch the latest reviews on YouTube of dashcams. The options and updates on these cameras change so often that the "Best" from 2 months ago is now trumped by the latest greatest.
Second, by watching video reviews you'll learn what features they have to offer. From video quality, dual cameras, sound, Wifi connection, review screen or no screen, G sensor, Motion park sensor, remote access, and the list goes on.
It's going to come down to what "must have" features YOU want at what price $ will determine "The Best" .
I personally have hard wired on my Ram a wifi connection camera with no screen that utilizes an App on my phone to view and download pics or movie. It has G-shock recording but does not have the 10 second recording when it senses motion like my old one did, and I miss that. But its discreet and doesn't block my view and has worked nicely.
This has been best for me currently but I know I could probably find better at a higher cost.
I'll include pic below. And the link, but since I bought it 2 yrs ago it is no longer available. This is typical for these things as they usually do a production run and start on a revised version. Once the run is sold out they're usually gone.
JOMISE K7 Dash Cam for Cars, Real 2.5K Smart Driving Recorder with WiFi GPS, 2" Touch Screen, Ahead Car Move Reminder, Traffic Lights Change Reminder, Night Vision, G-Sensor, Loop Recording
https://a.co/d/2SJZlnu
Good luck in your search. Its alot like Best tires or Best oil searches! Most are based on opinion and may not qualify as the Best for your use.