Best external display to pair with UHD (3840x2160) laptop.
I have a Lenovo Y50 laptop with an UHD LED (3840x2160) display. I want to purchase a 22" external monitor to pair with this - what's my best choice? (goal is no "letterboxing" on the external display & I can't go larger than 22 or 23" - so a 30" or 40" external UHD display won't do!)