So, I am willing to buy a new monitor for my 15-inch retina MacBook Pro (Ivy Bridge version) and I am seriously in doubt between these two contenders. They sell for roughly the same price. Here is what I could find about each of them: 27-inch U2713HM 2560x1440 resolution IPS panel with 178/178 viewing angle 350 cd/m2 brightness 28-inch P2815Q 16:9 format 3840x2160 resolution TN panel with 170/160 viewing angle 300 cd/m2 brightness As I understand, the 27-inch monitor should have better quality, as it is an IPS display with more brightness, better viewing angles and with better color accuracy. However, the 28-inch monitor is capable of displaying more pixels on the screen. I am not a photographer, nor I work with graphics or art. I will use the monitor for office work (basically Microsoft Office and a few other similar apps) and Internet browsing. Watching videos, listening to music, reading PDFs, writing text, editing presentations, researching. The usual stuff, several windows opened at the same time, which makes a large screen estate very welcome. So, I would like to know the following: 1. Do both monitors work well with my retina Mac? Running both OS X and Windows? 2. Do both monitors work well with other laptops (especially with Windows laptops equipped with an Ivy Bridge processor and an integrated HD 4000 video card)? 3. Is the 27-inch monitor so superior to the 28-inch monitor in terms of image quality that I should get it instead of the additional pixels? Finally, I would like to say that I am not interested in looking at other monitors. I don't live in the US, so my choices are limited and were narrowed down to these two. Thanks in advance.