Valentine 1 is the best unit out there. You get what you pay for.

I hard wired mine with the hard wire kit it comes with. Suction cup to the windshield just below the rear view mirror.

BTW, I was able to tap into a 12v source run up the drivers side A-Pillar. Powers on when the car is running. I spent over 30 minutes trying to get the pannels off from under the steering column. I gave up and started testing the wires on the a-pillar. Its prob a 12v source for the garage door opener. :shrug: