I have to agree with you there. Saw the Tour at the NEC Arena, and it was simply amazing. And same as you mentioned, the pits were pretty violent that night - first pit my mate an I went in (one of Shadows Falls, can't remember the song), and we both came out bleeding. Machine Head were best by far in my opinion though. Oh, and you mentioned Arch Enemy being one of your favourite bands, so this may interest you. Metal Hammer Defenders of the Faith Tour, Opeth and Arch Enemy dual headline, support from DevilDriver and 3 Inches of Blood.