A bit late to the party... but I did not see an official AVS review or thread on this (other than a combined discussion here).
I picked this up on sale over the holidays, and was pleasantly surprised by the quality of the transfer for such an old film; and wanted to give some kudos to the folks who did the restoration. There are a few shots that look a bit too grainy or soft (dissolves, for example), but the overall quality of the contrast, color and detail seemed quite good to me, and not overly-tweaked. So the original art direction, lighting, etc. appears to come through about as clear and untarnished as I could imagine.
This was one of my favorite SF flicks as a kid, when all we had was a B&W box. And I never had an opportunity to see it in a theater. So it's amazing to finally experience the film in such high quality in it's original ~2.40 ratio, with directional dialogue, and electronic "tonalities". It's like I'm seeing it again for the first time. I'm sure some of the youngsters will find the pace of the film too slow. But for fans of old-school SF, it's hard for me to imagine a better experience.
I enjoyed the extras as well, including the Robby features, and interviews with Lucas, Spielberg, Scott and Cameron on 50's SF. Interesting to hear their brief takes on the genre and what influenced them. Only other caveat I'd mention is that the sound FX may be a bit hot in spots. But I rather enjoyed that, cuz it gave them a greater sense of "authenticity".
If you're a fan of vintage SF, and haven't checked this out yet, I highly recommend givin it a look.