The GPS is nothing to write home about. It's slow and herky-jerky. It's the only disappointment I have. Other than that, it works fine. I like all the available inputs and the rotary volume. The touch screen works fine. Install was a breeze using the parts provided by Sonic Electronic and some research on the interweb to get it to function with my factory 2005 Ford Mustang amp and speakers. If I were to do it again, I'd save some dough and get the unit without the GPS.