Uncontroversial opinions on metal

The first seven Iron Maiden albums are the best ones, although some of the later ones have their moments.

"Hell Awaits" is a genuinely good album.

Immolation qualifies as death metal.

Harsh vocals are sometimes more appropriate than clean vocals, depending on the context.

The Dark Forest (UK) s/t has the greatest vocal performance of all time.
 
Most of the people posting in here have no idea how to in-crowd. Yes, I'm using it as a verb.