Aren't the stereo versions just the most recent CD remasters, ported to DVD in 24/96? Or are they remixes?
As Arnold Layne pointed out, on this one - both.
Reason for this is to try & keep as many people as possible happy.
If it had been decided to not do new stereo mixes, given the unprecedented options that digits bring to the party in terms of being able to go back to the pre-dubbed multis,
and given that there are 5.1 mixes being done anyway, that would have been called - rightly - a bad decision.
If it had been decided to leave off the 30th anniversary masters, given that these were touted at the time as "definitive" remasters, that would also have been equally correctly
called a poor decision.
Putting them both on gives everyone the best of both worlds. Those who think the original mixes are sacrosanct are happy, as they have the definitive masters of those mixes.
Equally, those who think it was a great idea to rework these titles into what they perhaps could have been are also happy.
Finally - and more importantly, I think - the fans get everything there is, including the stuff that was originally either left in the locker or cut out completely.
BTW - has anyone A/B'd the DTS & MLP mixes in 5.1 yet? Just curious.....