15
Given its a ranking list link, I'll post mine below: I havent heard / purchased all of their albums (mostly the later prog ones as they haven't clicked enough to warrant repeat listens - yet)
- Blackwater Park
- Still Life
- Ghost Reveries
- Watershed
- Deliverance/Damnation
- Pale Communion
- My Arms Your Hearse
- Morningrise
(Not listed - Orchid,Heritage,Sorceress,In Clauda) My general go-to album when feeling opethy is watershed as it is quite an eclectic mix.