Best : Iron Maiden kicked ass... I just like the way they always change songs between tours. For example, the drum fills are much more bad ass live compared to the album version. It sucked that I missed them for the Early Years tour.
Rush was fuckin great also, they don't move that much though. But everything sounds just like the album.
Dark Tranquillity yeah I agree they are really a great live band.
Hypocrisy are fuckin killer as well, Peter proves he can sing as good as in the album (maybe even better). Good thing Horgh joined the band - their last drummer always looked as if he just smoked ounces of weed right before going on stage. You couldn't tell if his eyes were open or not.
Just saw Sonata Arctica yesterday and they were even better than the last time (Although slow songs pretty much makes me sleep, except Replica which I like a lot).
Worst : Fireball Ministry.. they opened for Opeth last time. It was some kind of stoner rock. Very boring slow rock.
Pretty much all the bands at Sounds Of The Underground (except SYL and Opeth) - especially Clutch (but... I won 4 tickets for this show. I even made money selling the reamaining 3, so it wasn't that bad.