everything is relative.
Although I concurr with the concensus that DTS appears to sound better than DD, I would like to share the following observation with you.
I had the opportunity to test a variety of DTS recievers about a year ago. I tried everything from a $150 technics receiver to a $1000 Marantz.
My benchmark was my existing home receiver, Yamaha Dsp 3090, a NON-DTS, DD only, former flagship receiver that I had picked up second hand for a few hundred, but had retailed new for about $2000. Definitely a difference class from the test receivers.
Well.. the bottom line was, DTS did sound better than DD on all the test receivers..
HOWEVER...DD on my yahama receiver sounded better than DTS on ALL the other receivers.
Conclusion? Good quality components make alot of difference sometimes. The yahama wasn't the best for music, but the quality of the amplification, and the engineering made up for the lack of DTS..
( I didn't upgrade, still have it.. saved myself $1000_ dollars..)