Ok, I'm a little bored so I'll give you a summery...
I have the "THX Mastered" version before I bought this BD.
I just compared them because initially I'm not impressed with the picture quality (Maybe I just watch too many Pixar movies)
Video,
There are some very good looking scenes and some are just average.
Audio,
Well it's not that dynamic of a movie and I surly wasn't going to watch both full movies tonight.... Hell, I'm not even going to be able to finish one!
I am disappointed that they didn't include the "Theatrical version"
This is the "Extended version" and it's 3 hours and 53 mins. This is one of my favorite movies but that is just too long for me. Some of the stuff so far is new too me and interesting but really not needed. Mainly just longer scenes of him walking around.
Here are some comparison for video...
The first one are from the DVD, note the color changes and even some cropping....