since i do not own a high def television set, i still use laserdiscs and regular dvd. the audio on the laserdiscs i own blow the dvd versions clear put of the water.
for example the laserdisc dts versions of goldeneye, and tomorrow never dies blow the new dts tracks away. why is that? well the picture quality is not as good, but the laserdisc is at full bitrate not so for the dvd's.
laserdisc is still a very fine source for some films, until those favorites of mine appear on blu ray or hd-dvd, and the cost of a full rez 1080P television is affordable.