Ive got them. I have not listened to the cds, but the dvd mixes (esp the DTS) are amazing. Im hearing things in the songs I have never heard before.
the extra tracks are on the dvd disc, and you get to them by using the on screen menu.
The thing that really suprised me was how interesting the 'movies' are . There is a documentry (between 30-40 minutes) on each disk, which talks about the making of each record. They have new interviews with just about everyone involved. Band memebers, Alan Wilder, Vince Clark, Daniel Miller, Flood, etc. Really fun to watch, and suprisingly informative.
Definatly very cool!