If you plan on having a reverse camera I would recommend the TSV. It has a "AV2 first" mode. In that mode the screen will switch to AV2 automatically if signal is detected and then back to the input that was selected before when the signal is gone. What I did was to power the camera using the reverse light line. This way as soon as I put the car in reverse the screen switches automatically to the camera and when I put the car in any other gear the screen goes back to VGA.