I haven't see the Twilight movies (because I'm not a 14-year-old girl and that seems to be the target audience). I didn't like Underworld because I sat there and said the name of the movie that the current scene ripped off. There were many.
At the age of 61 I have seen many vampire movies. Dracula was not the first vampire movie made. It scared me a lot when I was a child. At the time that it was made there was a Spanish language version being shot on the same set. It was shot at night. I read that the Spanish version is better, but I have them both and I can't see much difference. A few years after Dracula was made there was a "sequel" made called Dracula's Daughter. It is excellent.
There was a silent movie made in Germany in the 1922. It was directed by F.W. Murnau who made many acclaimed films.It was called Nosferatu: A Symphony of Horror. Werner Herzog remade it in 1979.
An interesting thing about this film is that it inspired A movie called Shadow of the Vampire.
Nosferatu is clearly taken from the novel, Dracula, but changed some settings, some names, and the end of the book. Bram Stokers wife sued and the film was thought to have been destroyed. Fortunately, at least one print survived. It is available for viewing at openculture.com, and I think on a site you can get to by searching for "list of movies in the public domain."
Another film available is Carl T. Dryer's Vampyr (or Vampyre,. I'm not sure of the spelling.It is supposed to be based on a novella named Camilla, by J.S. Lafanu, but I have never seen that influence. Carmilla did inspire some two films in the 1960s when the lesbian overtones were easier to get away with. At any rate, Vampyr does not have any shock shots but is rather more towards creating an extreme sense of unease in the viewer.
There were a few vampire stories and novels before Bram Stocker wrote Dracula. Varney the Vampire is one. The Vampire, by Dr. John Polidori is another.
But Stocker pretty much laid down the rules for vampire stories.
Vampire legends seem to have been around for thousands of years and seem not to vary much from culture to culture.
I do not know if it is still in print, but if not you could probably find it in a library, but The Annotated Dracula is worth reading.
There are many entries on the net that you might want to read. Vampire, of course, is one.