The 70mm picture quality could potentially be quite nice, though with an aspect ratio of 2.2:1, some image would be missing from the sides.

The soundtrack is quite the most desirable aspect of it, of course. I know there is at least one privately owned 70mm print of the first movie out there, but nobody seems to know who actually owns it. Most likely this person would be unwilling to loan it out for scanning. I’ve never heard anything about whether there are any existing copies of the other two.