People complain that all their albums sound the same, and (though they don't...) I wonder, what exactly could Opeth do to make 'em not sound the same? They've explored every musical style from Death Metal to Punk to Country... all I can really think of that they haven't done is added hip-hop and electronica elements, but I doubt any one wants that... Hell, they even added some custom precussion on Wreath, and I mean, c'mon, who actually expected it to just break into a bongo-fest right there?