Symphony X are a fantastic band...one of my absolute favorites. They're incredibly talented all around. Romeo is a beast on guitar not only with insanity like Sea of Lies but he can really make that thing sing during more emotional moments as well. Lepond (and Miller when he was with them) provides a solid bottom end to the music and has chops to spare, and both of them have good taste in knowing when to copy the guitars and when to venture off into their own independant lines. Pinella adds subtle yet completely essential atmospheres and textures to the songs, as well as being a beast of a player as well...one of my favorite keyboardists out there. Rullo's drumming is as tight as Bruce Dickinson's spandex back in the 80's. And finally...Russell Allen. There's never any way to put into words how incredible his voice is. He has everything you could want from a singer, going from metal growls (though still musical and understandable) like in King of Terrors or Inferno, to beautiful moments like Awakenings, to soaring choruses like Church of the Machine. He is, IMO, the greatest singer out there, hands down. The epitome of versatility.