Im 28 with a baby on the way and Im just not sure if its worth it for the better sound system. I should get the X5 in about 3-4weeks but I can still change this option. The X is already my dream car but not sure if the standard sound system is ok or not. I currently have a 335xi with the harman kardon which I like but not sure I will be blasting music with a baby in the back seat. I went to the dealership and the 2 x5's they had the premium sound system. Any opinions on the standard sound system would help. Thanks!