Currently I'm enjoying very much the music of Yes, which is rather ... emotional yet complex. Unlike Genesis, which produced rather complex songs from an artistic point of view, Yes produced songs which "feel" rather emotional, but still are quite complex sometimes, like "Close to the Edge".
Unique is imho their style ... the Lyrics are almost only (as far as I know) written by Jon Anderson - and they are quite ... spiritual in some sense. I don't know any band which does something like this.
