I have had this unit (the one with bluetooth and NO usb, the previous one with USB/card reader but Without bluetooth was faulty) for about a year and is has been excellent in all respects - can play mp3's from folders in cd's. HOWEVER, when on the move (and even when not) it's virtually impossible to find the button you want and the impressive looking display is actually very simple, resulting in great difficulty dechphiring folder/mp3 names as they scroll madly through the few digits available on the display. Even the radio presets are virtaully impossible to see, especially at night. Basically you have to learn and then memorise the functions, then it's okay. Sound and functionality is great, other than lack of a remote microphone for the hands free. Greg.