If you buy the score, the Sarabande release is the real deal. It will run you probably around $100 or more. The others are bootlegs and are not worth as much so don't pay a lot for them. They typically have 33 tracks. There were only 2500 of the Sarabande CDs made. I have one of them so there are only 2499 left.
Tone you sent me was one you compiled yourself with all the music from the movie, the original (Jerry Goldsmith) soundtrack with all the other music added - really nice to listen to on a Saturday evening while doing the barbecue. You had a hard time finding the Caruso music, if I recall.
The Sarabande release has 13 tracks and usually goes for around $90 or so on Ebay.