I bought the special edition with the hardback book (very nice).
I've only listened to it once (vying for my attention with Meat Puppets II) but in some ways I prefer this to the studio version.
Mother is slower and has a lot more feeling, some songs get a longer workout (Another Brick pt 2, Comfortably Numb), some are practically identical to their studio counterparts, and others have been reworked slightly.
What shall we do now is finally on an audio CD (originally just available on the film).
Roger really adds to the theatre by goading the audience before Run Like Hell "Are there any weak people here?" and (in a really nasty dictatorial tone) orders them to "clap you hands, enjoy yourselves"
To my ears the sound is clear, James Guthrie did a great job. I don't know whether or not there have been any overdubs or many splices from different shows within the same song but the playing is top notch.
The 60 page book has some nice glossy photos and short pieces from each of the band members and others involved in the production of the show.
The only downside is the package is too tall to fit on my shelf (taller than a dvd case), so I've burned a copy for day to day use and stored the original with my 'Shine On' and Led Zeppelin boxed sets
If you like the studio album, you will like this. If you don't like the Wall, this is unlikely to change your mind.
Given the low price on Amazon, I recommended this to those who are fans of the Wall