The DD vs DTS argument has been argued over for years in the HT world.  Bottom line:  It all depends on the equipment and soundtrack.
A nice Tag McLaren Processor and some Mark Levinson speakers will yield better comparison results than a sub $1000 receiver.  When tested on very high-end gear, audiophiles swear there is 
no difference at all between the 2 formats.
Hmmmm, I guess the better thing to say is- it all depends on 
your equipment.  If you think DTS sounds better then go for it. 
