I very much liked Dracula, in fact I've just started reading it again. I first read it expecting fairly little, it was my first attempt at a classic and I thought that, knowing the story as everyone does, I'd find it boring. In fact I found that knowing what Dracula was made the first part, in the castle, more entertaining rather than less so. I agree with some of the other comments here about how the second half of the book is less good, it does tend to drag a little. However, I certainly found it kept my interest all the way through and overall I enjoyed it a lot. I've just finished reading Carmilla as well, it'll be interesting to compare them.
