Opeth - Ghost Reveries (2005)

Blackwater Park is amazing, but I like this album slightly more for some reason. And the highlights:
1. the intro to Reverie/Harlequin Forest
2. the main riff and demonic vocals in The Grand Conjuration
3. the interplay between clean and harsh vocals in Ghsot of Perdition
4. the beautiful riff and haunting vocals in Atonement
I would rate this one 11/10, but I don't really think a scale of 1-10 should actually go past 10 so I'll just give it a:
10/10