Installed in 2006 Yukon. This model is packed with features and for the price it can't be beat. The screen is very nice, the touch screen works great on it. I have never used a portable GPS, only on my phone so it took a little time to learn how to use the navigation. I don't read manuals or it would have been simple. It has dual zone so you can connect headrest monitors and have them play DVD while you listen to the radio, ipod, or sd card up front. The radio stations come in clear and I get a few more than I do with the stock radio. I am going to get another one for my other vehicle!!!