I feel that in terms of recording quality, the Blackvue units are quite good, but reliabilty is still suspect. I started using Blackvue DR400 on my previous car, the lenses fogged up within 6 months due to the heat. Afterwards, changed to the DR400-II, which was supposed to have better heat durability performance, but end up also kaput in less than a year.
On my current ride, I installed the DR380 at the rear, and DR500 for the front. The DR500 can still record clear images, but less than 9 months after install, the GPS is not functional, the date/time cannot be updated, the wifi cannot connect....and the unit feels hot as fxxk when in operation.
I am just waiting for the right time to dump these units to get better camera models...