Here is where I am going to prove that I am in no way a book snob. (If anyone hadn't figured this out yet.) I am going to admit that I love Romance books, Supernatural Romance especially. There is something about vampire romance that I love. (Yes I love Twilight. Read it twice, and read all the other books in the series in one long obsessive session, and have seen all the movies so far.)
So, I was so happy when I found out about the Riley Jenson Guardian Series. It's full of Werewolves, Vampires, and hot romance. This is definitely an adult series--lots of fairly graphic sex scenes. Riley is a strong woman who knows what she wants and isn't afraid to go after it. It has lots of supernatural elements and a page turning story. Best of all, the dark elements don't overshadow the good making it a non-depressing read!
I definitely recommend the first book in the series, Full Moon Rising by Keri Arthur.