Higher refresh rates are so worth it. More so than pixels by a country mile, as long as you can hit 90+ FPS and/or have variable refresh rate. I made the mistake of upgrading from 1080p144 to 1440p60 and going back wasn't fun. 60 FPS kinda stops feeling smooth.1080p @60Hz.
I have zero consideration for going higher resolution as my 750Ti cannot handle all modern games. When I upgrade next, it'll be to enjoy new games at 1080p.
Higher Hz is interesting... but I've never witnessed it, so I don't know what I'm missing.
2560x1440 @96Hz
On an overclocked QNIX QX2710LED