I don't want to get my hopes up for anything faithful to the book. I would say the closest adaptation is the BBC version with Louis Jourdan, even though I didn't find him quite the right choice for the role. That version followed the story line of the book very closely as well as depicting Dracula's evilness. British adaptations of classic works in the past 15 years (or more) that I've seen just don't want to stick with the original; they want to "improve" and reinterpret for today's audiences, who apparently can't relate to anything not from their own generation.