So for a little over $500 counting tax and shipping, Battle Cry is the only improved remaster you're getting, while the rest sounds almost (if not) identical to the original masterings. The DR is completely different and superior to every previous version regardless of format, so they almost certainly used the original mixdown source.
Why just this one out of all things, I've got no clue. The oddest thing about the set is that, out of all the CDs in it, only Battle Cry used the original master tapes or digital files.
Click to expand.They probably just picked the most easily available US versions for everything except for Sad Wings, which is the Complete Albums / Japan K2 version with the standard running order.