Mrmiata, thanks - I'll search for that thread, at this point its just curiosity. I want to know how my car started its life... I kinda like the blau the USB and 3.5mm plug pulled out into the glovebox is a mice touch as well. If I go back to factory, based on what I have read the unit with nav and changer control would likely be best since I could add the iPod control to it.