I've got 3 favorites.......
Nosferatu.German,silent,may be seen by some nowadays as a bit "arty".
Dracula.Christopher Lee was THE top actor,in the UK,for scarey films in the 60's and early 70's.Watched all of them at the Woolwich Odeon on Sunday afternoons (happy days

).
My third choice is Blade.Laying down a new track on the vampire story front,Snipes and Kristofferson are well cool in this half vampire/half human story.