I have to disagree that the laserdisc will be the closest match to what we saw in the cinemas, I have one reel of ESB on 35mm, and the detail on even a crappy print far surpasses the quality of the laserdisc version. How much dust and crap was on your print is a personal experience, some of us got to see gorgeous prints, others probably got worn out awful prints, so it doesn't make sense to me to archive a lower quality print if a better cleaner one was available.
I think the SE's will be much closer to what you saw at the movies as far as picture quality goes, audio is another thing altogether though. The new mix will probably be far superior to the original cinematic release, from an 'archival' viewpoint, that makes it not the same thing.
But then again the movies have the raw power and grunt when it comes to audio, so a stereo track thumping out through 8 - 12 massive speakers at the movies, to get the similar effect at home, a new 5.1 soundtrack may actually give you an experince that *feels* closer to what you originally got at the movies.

I am quite keen to see what they do with the dvd release, but I am only going to rent it, I know that it won't make much difference to Georgie Porgie me not buying it, but it will make a difference to me

I am still considering despecialising the SE DVD if it is at all possible.