If you havent read the Vampire Chronicles by Anne Rice then you should try them. They don't focus near as much on romance, although the vampires do tend to fall in love with humans, both male and female, and turn them into vampires. There are much more mature themes in them, Lestat is constantly struggling to figure out what being a vampire means to who he is, and is very philosophical and existential, at the same time being cocky and amazing lol. There arent really vampire hunters in it but there is the Talamasca, which is a secret organization that deals with everythign supernatural and later on some witches, but i havent read that far yet. There arent veery many sex scenes, they vampires do get pleasure from sucking the blood of their vicitims though, s there is that eroticism, and when Lestat takes over a humans body theres a couple sex scenes, but thats not the main focus. They really are amazing books.