First, the movies are excellent... The only gripe i had throughout the years of owning it on dvd was the picuture quality and as part 2 was so long, you would have to load the 2nd disc half way through.
Having now got this version on blu, i was amazed at how they have restorted this movie.
Ok, it is not going to be demo material, but the picture now to what it was previously is amazing. The original source material was badly damaged or even lost in some places and a lot of money went into what was done to restore it.
The extras are also great, with 90% in blu ray, also on a seperate disc, so this is a 4 disc box set. In one of the segments, it shows how they actually restored the picture frame by frame, was very interesting and will show you how bad the picture used to be.
If you love the movies then this is really an essential purchase. I am very pleased with this and feel i can now watch the trilogy in how it was supposed to have been presented to us.
Hope this review helps.