Just been dusting off the collection: good stuff!!

What are the MUST HAVE black metal albums, those more knowledgeable than myself? My favourites (that i own) are:

* Dimmu Borgir - Puritanical Euphoric Misanthropia

* Satyricon - Volcano

* Cradle of Filth - Cruelty & The Beats / Midian

* Thorns - S/T

* Emperor - Equilibrium / Prometheus

* Zyklon - World Ov Worms

* Mayhem - Chimera

WHAT NEXT?!?