I've owned and used both a 4k monitor and a 144 Hz refresh rate monitor. I personally value the higher refresh rate over the higher resolution. My 4k monitor is

I've owned and used both a 4k monitor and a 144 Hz refresh rate monitor. I personally value the higher refresh rate over the higher resolution. My 4k monitor is actually difficult for me to use, because it feels like the software has not caught up to the resolution yet. Very little is optimized for 4k desktops, yet.