The Polydor single-CD release may be very incomplete, it's sound quality exceeds that of the RCA two-CD release easily. Choir and synths sound much clearer on the Polydor release.
Also, the Anthology release had far more power in the bass frequencies.
Again, compared to this, the 1997 2-CD set sounds horribly flat, dry, and dusty.
Jedi needs to be released once again with a wet mix, and the appropriate amount of reverb a big orchestral soundtrack naturally has. I don't mind some hiss - I do mind sloppy digital remastering that thins the original power spectrum. Bad job, RCA!