There has been so much written about the various merits of the different releases of these recordings so I won't go on. However, I will defend this 30th anniversary edition. I missed out on the 1997/2004 pressings because I already have the 1993 Anthology boxset, which was such a god-send at the time. Perhaps I'm not judging the 30th anniversary collection so harshly because the booklet of notes in the anthology did such a fine job and I'm not missing the lack of such notes in this offering; but what I am really enjoying is the packaging of the original album artwork, particularly of the first soundtrack, which takes me right back to the late 70s! The CD ROM includes all the original artwork, including the free poster from the Star Wars double-LP, which I had on my wall for years. It's great to see it again and in such high quality TIFF detail. It's a pity the original liner notes weren't included but I've found them on the internet anyway.
Sound quality: a huge improvement on A New Hope, but not so discernible with Episodes V and VI.
Enjoyment factor: hyperspace. It's great to hear these soundtracks as truly masterful symphonic works but also as a warm piece of nostalgia, helped along by the inclusion of original artwork. Does it for me!