As far as overall arcs go this season wasn't as good as 3 and maybe even 2 but I think the quality of the episodes was higher throughout more of the season than in the earlier ones.
Anyway, the DVD set itself is also an improvement over the previous ones. In general it appears to me that the quality is better. There are plenty of commentaries for a lot more episodes than I would have expected. One of the best being a commentary with Joss Wedon, Seth Green and Marti Noxin was one of the more entertaining ones.
The menus on this set are good looking and don't have a ton of animated crap but unfortunately, at least on my player, you couldn't easily skip from the end of one episode right into the begining of the next one. You ended up getting the DVD credits instead.
One other thing. This season of Buffy really coresponds with season 1 of Angel but the first season of Angel was released awhile ago so for me it was like stuff was a little out of wack.
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