Ok, here goes.
I like stories about M/F rape. Especially those involving an innocent, a virgin or a young girl. I like reading descriptions of the scene, how she is taken, when the penny drops and she first realizes what is going to happen to her. Although I love scenes that depict a girl screaming in pain. I don't like the ass rapes - much prefer pussy gangrapes. I like to be surprised either by a good, credible description or by a twist in the story or by something different.
What do you like?