To be honest, Children just sounds like filler to me. The main riff is cool, but the song just seems to borrow so much from Serpent's Kiss that it doesn't really have an identity of its own. It sounds like it should be on Russell's solo album, not on a Symphony X record. Something about it just doesn't feel like a Symphony X song (other than the bass/guitar polyrhythm during the verse). I can't explain it beyond that. While I don't understand all the love for Electric Messiah, I definitely think it is a better song. That fade out ending sucks, though - the song is just too energetic to end like that.