 I just purchased this beautiful car.  The seats are luxurious with tons of settings and it even has a driver side massage.  The car drives great and is ultra luxurious.  However, even with the premium sound $1800 upgrade with 13 speakers, the quality of the radio is horrible.  It sounds tinny and when you adjust the base, you lose the midrange and can not adjust that.   The feature to give stereophonic sound (Logic 7) sounds terrible and echoes all around when you turn it on.  It's amazing that with such an awesome car they would put in this kind of sound system.