I'm in the "my favorite is whichever hero I'm currently reading about" crowd, but my favorite out of those would have to be the ones who are bad A to the rest of the world but sweet and protective to their chosen ladies.
About as far away from paranormal romance as you can get, but Simon R. Green writes these absolutely fabulous secondary characters that I always, ALWAYS want to know more about. However, I don't think most of them could carry their own book. Possibly a short story or a novella, but not a book.
I'm really enjoying the werewolf romances I have read. It's nice to have a change from vamps every once in a while. I love 8 and 1. I'm usually cold, so 8 would come in extremely handy, and I love the idea of a guy who's always there, or at least will always be there if you need him.