Are there acts or specific songs in which you enjoy the delivery of the performers voice-wise?
What are your preferences regarding effect wetting? Either as performer or spectator.
Maybe performers can also bring some input as to what informs whatever they do.
When looking at those specific songs from my personal taste, I would say I have a soft spot for minimal/no effect voices dripping with contempt and venom.
Some Atrax Morgue
The Sodality - Schmooze, I Can't Stand A Bitchy Chick
Con-Dom - Hate, Moor Rapist