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Get some monitors with 2560x1440. I made the switch from 1080p to a 4k screen scaled to 2560x1440. Best decision ever. Can't wait for my new MacBook (F*ck you Apple, how about finally preparing the shipment? /rant over) so that I can buy a second Dell P2715Q.
 
I'm confused. Your title asks for 4k monitor suggestions, but your link is to a pair of 1080p monitors. Which do you want?
 
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