Amon Amarth churn out solid album after solid album because they can replicate their style and excellent writing every time without sounding stale or tired.
Shai Hulud (named after the sandworms in Dune) have been cranking out their awesome metal/hardcore hybrid for nearly 20 years, and they do their name proud.
Mediterranean metallers Nightfall continue to push their brand of accessible black metal. One would be hard pressed to consider them strict black metal nowadays.
Time and Eternity wins early points for its striking anime art style and its intriguing premise, but the story collapses under the weight of insipid dialogue.