I upgraded from my DVD set to this one. Other reviewers have gone into the details, so I won't repeat anything here, suffice to say it's a great series. I would have liked to have seen more special features for the BD release, but you can't hope for much with a defunct series 10 years after the fact. The one thing that was missing, and it's a small thing, is just an episode list somewhere. One thing I liked about the DVD release was they had the episodes listed in series order and also the dates they were aired (totally out of order). That way you could clearly see how poorly handled this series was from FOX. It also let you know which episodes were on which disc. As it is with the BD release, know where does it say on any of the packaging or disc labels, which episodes are on which disc. It's a little thing, but I think it's important.