Originally Posted by P3rLuS
I had an head unit with 7" touch screen before in one of my alfas, but it was just impossible to drive the car at night time because it was giving to much light for the driver, and i wont even mention how much it was disturbing. Now i use only simple stereos.
But the large screens can be dimmed or even darkened if necessary

. Quality units have an ambient light sensor and navigation screens can be changed for Day/Night use with appropriate colours and intensities. I don't see the problem with a large, colour touch screen...except for cost

.