What are you looking for in a good book?

I appreciate books that have unique plots, or, since that's difficult to do at this point, books that have plots that have been used before but with some sort of twist. I read Twilight because I've always liked stories/movies with vampires in them. I'm a bit weird, I guess. I didn't expect it to be so different than the usual story, yet sort of similar, too. I think A Great and Terrible Beauty might be my favorite book. It has a bit of everything in it -- fantasy, suspence, horror, romance, mystery. The only thing I don't much like is the time it's set in -- the Victorian era (I think that's what it's called). That's also something you can try to do...have all the genres somewhere in the book, so that more people will be interested in it. Also, surprising the reader works as well as it does in movies...*if* they are actually surprised. The key is to trick them somehow so they don't expect it...lead them the wrong way, maybe. I hope this helps. I'm writing a young adult novel, too, yay for us! Good luck!