My advice would be to go with a good 6 quart, but also pick up a bunch of glass tupperware. Something like http://www.amazon.com/gp/product/B00BSZJYY4 Leftovers are your friends! (Especially in college. All of the goodness of slow cooked food, but with even less hassle.) It's always easier to make more food than you need and save it than to exactly make enough for one meal for one person.