Double-check for the following:After about a year of owning two budget cameras, I would be looking for these requirements.
Long lasting battery in temperatures from -10C to 55C at a video resolution that can read licence plates.
Spare batteries and a separate battery charger.
Date and timestamp remain as you change batteries.
Each time you start a new ride, check that the camera's timestamp is correct.
Will the manufacture honour its warranty regardless if you purchased it directly or from a third party like Amazon?
The following don't exist yet but you might as well ask in case there are good solutions.
Good internal microphone that can pick up a conversation 10ft away while in its waterproof case.
Audio recording that stays in synch with the video recording.
Waterproof case that gives you access to the micro usb ports.