Hairy_hen's isolated score track will definitely sound better than the DVD tracks (there were two; one represented the score as written for the film — although as h_h points out, this wasn't always accurate — the other the rescored cues that appeared in the film, with the film's production audio filling in the blank spaces).

The Intrada set has much, much better sonics than the DVD, which was also presented as lossy Dolby Digital tracks (192 kb/s for the primary score track, 128 kb/s for the rescores and production audio track). So in addition to pinched and tinny sound, it was also compressed to hell. And I expect h_h will fix the mistakes made in the assembly of the score on the 1999 disc.

Don't get me wrong, the 1999 disc was a godsend when it first came out for several reasons, chief among them were the isolated score tracks (hearing “The Droid” in its proper context for the first time was really eye-opening in terms of the level of detail that Goldsmith would inject into his scoring; notice how he musically illustrates the beads of whatever sweating down Ash's face), but the Intrada set really set a bar in terms of presentation and annotation of that score.