Just got a $399 50" Samsung TV on BlackFriday. Base on the review, it supports 4:4:4 which is a must as PC monitor. Hook up the one yrs old cheap HP laptop to it via HDMI port.
Looks great! 4k video streaming from Youtube works very good.
4 x 1080 Tiled windows - perfect for productivities.
I don't do gaming. The latency is less of an issue for me.