Been trying to decide if I want to switch to a new 13/15 Retina from my Air and I love the size/feel of the 13 rMBP but I'm not going to work in 1280x800. No problem, I just switched it up to both of the scaled resolutions to test. Desktop looks great and just the right size in either one really. No lag issues with the apps that I can tell (yet) but I did notice when the screensaver kicks on the machine chokes. Using Arabesque for example, it's like it's rendering at 2-3 fps and when I go to type in my password the whole machine is dragging. Takes about 1 second per character to get recognized. Anyone else running a scaled resolution that has seen this?