That's cool man, I'd like to see Megadeth some day. I'd really be more excited about seeing Overkill, though. I've never gotten into Arch Enemy, but I wouldn't mind seeing them. I'm sure it would be enjoyable. I like some of Opeth's albums for an occasional listen, but I care nothing about seeing them live. Lamb of God is shit.
That's really awesome Megadeth played Devil's Island!