I have had my Clarion unit for over a year. Not really a problem to adjust controls. In fact you can vary the angle of the screen. I have done that and can reach around the screen if I have to. Honestly, I don't constantly adjust them, so........

One of the best features is my low light full color backup camera. I was always afraid to parallel park because I could not judge the distance to the car behind when I got close. Between the wing and high window, I was ultra cautious. Now I can get within an inch or two without hitting them.