I am wondering if I get a 2nd monitor for my 15" MBPr (late 2013 model), do I need to make sure the monitor has the same resolution ratio as the 15" MBPr? My screen resolution is 1440x900. I believe MBPr is a 16:10 resolution? Aren't most monitors 16:9 resolution? Basically if I am looking to buy a 2nd monitor, what resolution ratio or resolution size should I be looking for that ensures the display transfers 100% directly from MBPr to the monitor with zero distortion? I'm interested in a 27" monitor. Just unsure what resolution size or ratio to get. Please help, thanks.