Hey James, there was a reissue some years ago that had the swirl vinyl and was sourced from the analog tapes. I understand those sounded great (note; I have an original, early pressing with the swirl vinyl, in NM condition...yeah baby!). I have no idea about what Friday music will be using as a source. I hope they reply to you with a good answer. But, if you can find one of the reissues from some years ago, maybe for sale on Discogs, those are told to be very good. There was also a pressing from the same reissue in black vinyl which I understand has the same SQ as the swirl vinyl reissue. Again, try Discogs.
On another note, Dave did a new album of Alone Together just last year, titled Alone Together Again. It's the same songs, in the same order, in an entirely new recording session. I bought a copy about 6 months ago, when it first released. The music is done extremely well, and I can wholeheartedly recommend it for that alone. The SQ is also really good, in fact, better than the original Alone Together album, by a good margin. Having both is a treasure in my collection.
I hope this help.