i would nominate the sothis and the art of war EPs for vader. the former is a classic and the latter is their second most reviewed release on metal archives. maybe the morbid reich demo too?
i'd also nominate violence is the prince of this world and terror abraxas as the notable d666 EPs, may as well include them as it's quite a small discography.
and pleiades' dust for gorguts.
I'm definitely with you on Pleiades' Dust. Destroyer 666 has a small discography, so that will be no problem. Vader's discography is already huge, but if other people want me to add the EPs, I will. I don't know most of their albums, so I'll defer to the fans.
king diamond and electric wizard should also be on the 3 list btw like they were in your previous post.
Got it. Added them.