the new mastodon is pretty fuckin good. guitars are more technical in some spots, more catchy in others. the biggest difference though are the ocasional clean vocals and the less frantic drumming (which is still pretty crazy). some will probably like this one better than remission, its too early to tell for me as ive only listened to leviathan like twice. over-all its a little more calm than the last, but im definately not disapointed.