I am absolutely satisfied with the Sony CDX-F5500. Before that, I had also a car radio of the company, but that was not mp3 compatible, because it certainly had under his belt already 5-6 years - and it was time for something new. The Quälität is used well, as I do not know it from Sony differently and would have expected. The only "disadvantage" (if one can even call it that) are quite tiny keys below the display. But I myself feel this not as disturbing, however, that everyone has to decide for themselves - and those who prefer a bit "clearer" Stationsstasten who should he prefers not resort to this device. As I said, for me but not a real shortcoming. The remote control that comes with the unit is clear and easy to use while driving. The display is clearly visible and has several modes of display ... as time, CD track, or song title. In addition, a spatial sound can be set on the Radio, which is for example advantageous if the loudspeakers in the front area are located at the bottom of the doors, as this feeling comes the speakers were sitting on top of the dashboard. It is also with 4x50 Watt quite powerful. Therefore it is worth to me already 5 star.