Which is a better topic for a 10 week research paper?

I have to write a research paper for my english cl. What do you think would be a more interesting long-term topic, Sigmund Freud's theories of the Oedipus complex, and Freudian slips, or the role of women in fairy-tales? Two very different topics, but what do you think would be better? I'd also appreciate it if you could give a reason for your answer and maybe some books (literary books) that might have to do with that topic.