Very impressed with this unit! I was concerned to pull the trigger on this purchase until I read other reviews, and I'm glad I did. This unit has excellent sound with the nice eq , good navigation with many usefull features, easy to use touch screen that has anti-glare and so many media selections I doubt you will use them all. Dvd/ cd, usb,sd card, rear view camera, xm radio, rear seat monitors (2 ea) and the radio with 18 fm presets and 12 am. I got a rear cam with mine and it really helps with reversing into a parking spot and eliminates the huge blind spots of my Envoy SUV. The performance is awesome and I don't think that doubling the price will get any more options and function or better sound with say a Kenwood unit. I would recomend this unit to anyone who wants in dash nav and multi media.