StarThoughts said:

Regarding the audio: Did the AC-3 LD have a Dolby Surround version of the Sensurround test track, or was it the same mix from the CAV box set (which I think was the 35 millimeter Dolby Stereo)?

Both the AC-3 and the PCM mixdown on that disc are the same mix, i.e. the 'Sensurround' version. I'm fairly certain that the CAV disc's mix is the standard Dolby Stereo - like the Star Wars mixes, the home video versions may have been slightly tweaked, but all the tapes and discs from 1982 to 1992 sound fundamentally the same.

Good to see Andrea aboard! I've been doing a few captures of the laserdiscs in my collection (a 1982 PAL disc, the 1992 Collector's set and the 1995 THX AC-3). It appears that some of the more contentious shots in the 1995 (the Mother room, Ash's head) are exclusive to that release; since they appear to reflect original 35mm print timing, perhaps the THX disc was a conscious effort to represent an authentic theatrical look (as well as sound)?