Voodoo Six: Good band, good fun, but not enough variation in their songs to be a headlining band. Served their purpose as a first support act.
Sabaton: Great band, both in terms of songs and musicianship, and they had a very good interaction with the crowd. I had not listened much to them before, but now I certainly will. A band I could easily imagine myself paying to see if they play in Oslo later.
Maiden: Well, what to say? It was a great show, with many live classics and some nice surprises. I knew part of the set list (SSOASS and ATSS were no surprise to me) but not all of it. The Prisoner and Phantom were total surprises to me. Since I missed the Early Days tour, it was great getting to hear these two songs live now. The atmospheric section of SSOASS was extended a bit compared to the studio version, and the keyboards were louder in the mix. As it is one of my favourite songs, it was really awesome to hear it live.
Some of the stage props were also really cool, like the thing moving inside the guts that Eddie was holding up during the son Iron Maiden, the organ and face-paint on Mr. Kenney during his keyboard parts in SSOASS, and there was also more pyro than on previous Maiden shows I've been to. Bruce didn't talk much between songs this time around, but he had a lot to say about Nicko during his presentation of the band members during Running Free
The not-so-good was that up where I was placed, there were more people sitting than standing, except during the obvious crowd-pleasers like Run To The Hills, The Trooper and Fear of the Dark. The standing crowd seemed lively, like it always is.
Also, the sound wasn't really good. As Yax has already commented on, the guitar sound was muddy and many times it was hard separating the guitar sounds from each other. However, the drums sounded great. The vocals a bit up and down. But I guess this is what one has to expect in an indoor venue of this size.
Still, hearing four songs for the first time - Afraid To Shoot Strangers, The Prisoner, Phantom of the Opera and SSOASS - far outweights these little negatives, and I thoroughly enjoyed the concert.