I saw some side discussion of this issue on another thread but thought it's worth clarifying this issue here if possible. My sound hardware is a robust Pro Logic system that I'm very fond of and not likely to upgrade anytime soon. My DVD player is configured to down-mix to Pro Logic. Comparing true 2.0 mixes to 5.1 down-mixes, it's hard to really see much difference. But, so far it *seems* like the 5.1 down-mixes are more dynamic. This may be simply due to the fact that the 5.1 mixes are probably newer than the 2.0 tracks in most cases. At this point, I'm using the 5.1 track whenever possible. Wrong?