The best things available currently for theatrical closeness and audio competitiveness are
DarkJedi's V3 DVD for the trilogy, with every audio mix available for each film. These are still based off the GOUT, but are as close to a definitive issue that is possible.
My personal favorite is the Puggo Grande. This is a 16mm transfer of Star Wars with the mono track. Quality is not the greatest but still perfectly serviceable. You'd really be surprised what this one can do, and it has quickly become my go to for the film despite all the print wear.
http://originaltrilogy.com/forum/topic.cfm/Puggo-GRANDE-16mm-restoration/topic/9752/