Shopping for a new Macbook and, given the current lineup, screen resolution is a big factor. Here's my question: has anyone with a 13" Retina Macbook Pro installed SetResX to use resolutions other than those available in System Preferences? Specifically I'm wondering about performance at 1920 x 1200 scaled resolution. Is this even available through SetResX? I know it works on the 15-inch through System Preferences. Basically, I'm hoping to make my next Macbook have the same screen real estate as my 24" Cinema Display at its native resolution. Thanks in advance, all!