Funny...just listened to this disc yesterday for the first time in a few months. While I love the original album, I think this disc left much to be desired, so I went with at "5" on this one.
Two things I go for on DVD-A are sound quality and surround mix. The sound quality is ok, but way too compressed for my taste. The only things that sound much better than on the CD are the voices (especially the child's voice on Enter Sandman) and the orchestra on Nothing Else Matters.
Additionally, the surround mix suffers greatly. For the most part, it's all up front with a lot of ambiance (especially drums) in the rears...then, suddenly, a guitar circles around the room. I like a mix with a lot of consistant action in 360 degrees, so this mix didn't really work for me.