Right now, I'm entertaining the idea of putting both audio tracks on the dvd's. I'm not sure if there is enough of a difference between the two to do this though. I may have to do a side by side comparrison to see if I should add the '85 mix. If there is enough of a difference, and I like both mixes, my audio options may look like this:

1: Faces/Definitive audio (Dolby Surround 2.0)
2: Ben Burt '85 mix (Dolby Surround 2.0)
3: Audio 1 or 2 (PCM 2.0)
4: Isolated Score (music only) (DTS 2.0)
5: Commentary (Dolby Surround 2.0)

Keep in mind this is just an initial thought. I may decide that one version of the audio is enough and go with just the '85 mix or just the THX audio. Also disc space will play a role in what audio makes the cut as well.