Metal to Sleep to?

When I read the title, I thought "Burzum", but I see you've already listed it. Still, I'm going to say it. Burzum. His Dark Ambient albums (Dauði Baldrs and Hliðskjálf) are great to sleep to. Filosofem isn't too bad either.
 
The guitar tone on that album is indeed very relaxing, which works for sleeping. Too bad it lacks the power of Quintessence.

Also, some of the melodies Vintersorg sings I just find very relaxing. Quintessence would be a good one as well, the melodies on that album are very cool.
 
Nadja (drone/doom/shoegaze)
Isis
Jesu
Agalloch
Boris
Sunn O)))
GOG (more drone/doom)
Spektr (black ambient with BM outburts)
 
Either something brutal or something dark or melancholic. Reverorum Ib Malacht does the job well. But recently its been Lurker of Chalice and Kludde.