Keri Arthur / Charlaine Harris books?

I've read the Charlaine Harris Sookie Stackhouse novels and thoroughly enjoyed them and am waiting on the next installment. I am now reading the Keri Arthur Riley Jenson series and LOVE them! I am making a list of other books to read when I have finished this series and wonder if anyone can suggest books that are similar. I like following a main character for the whole series and very much enjoy the romance part of the books. I was going to try Laura K Hamilton's Anita Blake series next but any other recommendations much appreciated. Adult vampire novels only please ... no teen books.