Vegard Pompey
ALLY TO GOOD, NIGHTMARE TO YOU
I've never listened to any of their albums all the way though, but I've heard plenty of their songs before. They aren't any more complex than complex bands of any other genre, and they aren't better musicians than the best musicians of any other genre.
Perhaps not THE best, but each member is ONE of the best musicians of their instrument, and it's a fact you cannot deny. And as with any other good band, there's more to their music than mere complexity, surely there are more complex bands out there but that's not relevant.