Originally Posted by daimonos
Work your way backwards. The newer half of their catalog is all really progressive. Starting with Ruun, Axioma Ethica Odini, or Vertebrae wouldn't be bad, but Isa and Below the Lights are probably my two favorite from that era.
As for the older black metal stuff, Hordanes Land is incredible, and all of the other albums are very solid. The only Enslaved album that isn't very good is Monumension, because it's wierd as fuck.
Agree 100% with Daimonos. Vertebrae is amazing and tied as my favorite by them with Below the Lights. They just make amazing music, and are one of the few bands that in my opinion, have never written a bad song.