I spent years on the DashCamTalk website
I scanned all new posts, like you do, like some do, and got an insight into the good and bad
The one piece of advice that I followed, and rung true from numerous posts, was to avoid the dashcams on a stalk, in an accident they tend to swing on the stalk and end up pointing either up or down, depending on how it's been installed
Go for the wedge shaped ones that are rock solid
The other often posted about complaint was the manufacturers insisting on an 'endurance' card. In practice these cards were slower (it's the write speed that matters) and caused significant problems on multi camera setups where you have 2 or 3 cameras all trying to write to a single card