I've had my "retina" 15" since August and have been running it at 1920x1200 pretty much from Day 1. Coming from Macbook Pro's at 1440x900 and 1680x1050, it is d

I've had my "retina" 15" since August and have been running it at 1920x1200 pretty much from Day 1. Coming from Macbook Pro's at 1440x900 and 1680x1050, it is definitely an adjustment. But honestly, I would never go back now. I can actually prefer coding on a single screen now! If something is too small, I can usually get away just bumping up the scaling in browser. I haven't experienced/noticed any kind of fuzziness or performance issues with scrolling. By far the best computer I've owned.