Just upgraded to a 65 inch 4K with HDR TV for my Pro and it's outstanding... it's literally like going from a 640x420 crt watching standard def and going to 1080, but even better.

I bought the TCL model TV and it functions flawlessly in gaming. Great refresh rate, very low lag, fantastic picture quality, and surprisingly great speakers. If you have a pro and can get a 4k set... do it. It's amazing.