Seriously, I did that and I regretted it so much that I ended up reselling it and buying the 2017 21.5 Retina 4K (of course, I lost a few hundred $/€ with that). I wasn't aware before that there is such a HUGE difference between a Full HD and a 4K display, but there actually is and it's big. The 4K display is like the glossy pages of a high-end design, architecture of fashion magazine or book whereas on the Full HD display you can actually spot the individual pixels of the screen which is unaesthetic and I find it gets my eyes tired much more quickly. Besides, you get a discrete Radeon graphics card whereas on the Full HD model you only get the CPU's. And all this for only +200$/€! I think Apple shouldn't even sell that Full HD model, it's like an outdated laptop in an all-in-one frame.