Been waiting until the refresh to replace my 2010 MBA. When the announcement came out, I ordered both the 13 MBA and the 15 rMBP. I got the rMBP first and wasn't that impressed. It was bigger in dimensions, heavier, and I had to increase all the fonts and icons due to the size. I just bought the MBA specific Happy Owl briefcase just came in, so basically decided in my head that it was going back when the new MBA came in. It came in and plans have changed. Going back to the MBA is a huge difference in screen real estate which can be a pain when not connected to a monitor. Holding each in a separate hand, the weight really is negligible. It just seems heavier going from the Air to the retina. Based on the screen alone, I'd pick the rMBA. However, I'm trying to decide if its worth the extra grand. This thing is expensive. In reality, is the negligible bump in speed really worth the new MBA over the old MBA....