Vampire Series (besides Twilight)

I am looking to start reading another Vampire Series. I have already read Twilight series. So, until the next book comes out if it is even going to come out I need another series to jump into. So, I have looked and there is alot of ones out there but I want opinions on what is the best one to start with next. Any ideas? Also, what is the first book in the series as well would be helpful!. Thanks!!!!!