depends what your goals are, BenFun.
have fun, get laid, not take shit seriously, see a little drama and get tight tang with little strings = date the 22 year olds.
have fun with a more experienced chic, avoid drama, but her clock is ticking = date the 32 year olds.
I've dated 5 years older and 10 years younger. The biggest thing, once the sex gets old, is the time ya hang out together. It's impossible to hold a conversation with a girl 10 years younger without getting frustrated and wanting to beat her with the Directv controller for leaving MTV on again.