I haven't had the chance to check out the Matrix yet, so no opinions there.
Regarding the Phantom Menace, even with the level adjustment, I still find the LaserDisc to sound "better". I've done an a/b of them both with level matching too. YMMV.
I think the other lure of this project is that the DTS discs contain a verified, undisputed copy of the theatrical track. There is no doubt what it is. Home video formats are always open for debate and scrutiny.