Since I'm a married guy, I'd go with the socks. I'm not allowed to have girlfriends (for some ridiculous reason) anymore, but I am allowed to have socks. I looked it up.
I love this question, because it's a win-win answer. Since I can't have a girlfriend anyway, but can always use more socks, I can't possibly lose by choosing the socks.
And seriously, who doesn't like socks? Not only are they warm and very stylish, but they're very versatile. They fit just about anywhere, you can use three of them and play elephant (you may need tape) all day, you can get them wet and throw them at people or at small animals, they can polish cars or clean your computer screen... socks are just awesome. You just can't do that stuff with most girlfriends, by the way, and socks don't complain very much.
I'm going to go play with some socks right now, in fact.