The Early Days is my favourite. They really did a good job there. I loved hearing so many older band members telling a little bit about their time in the band. Lots of great and fun stories in it.
Flight 666 was decent enough, but it was a missed opportunity. We could have seen so much more of the band backstage. Before, during and after gigs. Instead there was lots of live footage which we got on the concert disc, and band-members praising each other like there was no tomorrow.