I've read a good few of them, and already know some I want (Long Halloween, Hush, Knightfall, etc.) and I already own The Killing Joke. I've neglected picking up much from DC, I just read them online from time to time. However, I'm gonna be going to a toy show this weekend (get to meet Stan Lee) and I am going to SDCC in July and I want to have a good idea of which things to pick up. Again, I know some of the basic ones I need. But I don't read much DC so some advice from others is appreciated. Also, how are the Harley Quinn books (Batman: Harley Quinn, Mad Love, Harley and Ivy, and the like)? She's my favorite DC villain and I'd like at least one or two of those in my collection.