I like my vampires like I like my lovers: melancholy, troubled by questions of meaning, and not necessarily romantic.

Nothing against the fun-campy-exciting vampire novels of the world, but this is a place for moral complexity, existential dread, and vampirism as a metaphor/lens to explore other ideas. I want vampire novels that make me think. Introspective vampires! The vampire as social commentary! Please suggest titles to add because I'm desperate for more!!