Favourite 10 in no particular order include:
Meshuggah, Devin Townsend Project, Chaos Divine, Mono, Anathema (acoustic), Iron Maiden, Metallica, Tool, Gojira & Soundgarden
Have seen all of these and can concur, I think Maiden is the best of that lot. Metallica is my favourite band and seen them 7 times, I mean their gigs are a lot of fun but they're not as great musicians as some of the others.
Meshuggah is an intense gig, music with bad intentions!