Are you a clip tie person or a twist tie person?

The Macbook I have does everything I need. I don't need a faster a computer. I could take the $100 and be perfectly happy (note: I have the 13-inch, so I wouldn't be getting the 15-inch with the new retina display, which starts at $2,200 and there's no way I'm paying that for a laptop). Or I could trade my laptop in for one that's slightly faster, and be happy that I have an updated model. Would you take the upgrade, or the check?