This thread should come with a warning label...

From what I understand DD is more universally accepted, and most receivers will play DD no problem. Higher end systems (until the last few year) were capable of playing DTS, but this is always a selection you have to make in the DVD menu. You ever notice in most DVD's they ask you to confirm your system is capable of playing DTS when you select the DTS track? Also as stated before the DD track is going to be there no matter what on newer DVD's, however the DTS track adds cost to production, thus only directors, and production companies that value top quality sound will invest the time and money to add the additional sound track to the DVD. Lucas, and other like him always have DTS tracks as they stress the best audio, and best video!