If you're gunna bother maintaining a dashcam might as well get a good one.
My favourite is still Blackvue, these Koreans were the best back a few yrs ago and mine are still not too bad by today's standards. HD, 2CH, GPS, wifi & they're capacitor... yep cost a bomb, today they're probably worth more than the car
Have played with some other cheaper "equivalents" that looked equal on spec... but nah, they either crash repeatedly, take forever to boot up, fall asleep unexpectedly etc etc. And come time to read the file, image quality soso barely able to read plates @ 720 HD, frame rate is low ~15fps. And if they don't have GPS there's no speed or mapping coords recorded.
Even with "good brand" units, if they use lithium battery not capacitor - when that battery dies, the camera won't have enough power to properly shutdown. The last file (THAT YOUR CORONER NEEDS FOR EVIDENCE!!!) won't close properly, it'll be corrupted & unreadable. Cycle that camera a few times (= normal driving on/off) your SDcard gets filled up with corrupt files it can't delete/overwrite, it jams up & won't record anything new. Yeah sure you can erase that card manually (=pull out & format in PC) but on ours that needed doing every 5-6d. IMHO that type of camera is worse than nothing.