I suggest we add "Gothic giallo" to this poll.

I recently saw "Spirits of Death" which I highly recommend to Ida Galli/Evelyn Stewart fans. The cinematography is quite ethereal and the music by Carpi and Nicolai is amazing. There's also a drunken costume party orgy!

Another Gothic giallo I saw was "Love and Death in the Garden of the Gods" which is very highly recommended to Erika Blanc fans. This one plays out more as a romantic tragedy than a giallo but it does involve listening to tapes to piece together a mystery and it gets quite violent towards the end. Like Spirits, it's very beautifully shot.