This monitor is outstanding. It has a fast refresh rate of 144Hz, giving you higher frame rates when V-Sync is enabled. Colours are fantastic after a few tweaks in the HUD and the brightness is incredible. Using the monitor everyday, I have the brightness turned down to 25, so there's a lot of headroom to crank it up when needed.
I had an issue with a dead pixel but I contacted ASUS and they're shipping out a replacement for me, no problem.
I'd definitely recommend this monitor to any gamers out there who are looking for the best experience.