I don't know the entire stories of the two epics of India. Yes, we have the Vyasa Bharatha at home. But apart from cleaning the bookshelf it rests on, and counting it's different volumes, i haven't done anything.
Of the two, frankly, i like the Mahabharata simply because it has more stories than the Ramayana. I might be mistaken here. I'm not very fond of the Ramayana. I think it only talks of machismo and manliness. They do talk about virtues and all that. But, we can learn about that from other sources as well.