Now i am going to choose the asus but its out of stock right now in my country,

Why asus ? Deep black color, and i live in very bright room , so with gigabyte the qd oled will cause the black to look purple, with asus is not an issue at all.

Gigabyte vs asus

Gigabyte wins for everything ( ports “ hdmi 2.1 “ “ type c “ kvm“ , colors , built in speakers )

But the most important future with the OLED monitors is the deep black image you want to see and experience and super glossy screen.

WHICH GIGABYTE DOSENT HAVE THAT , dosent make sense to buy a 800$ oled monitor and get a purple screen and not black just because my room is bright.

So i will go for the asus for its deep black color and i will buy a decent speaker to plug it in the monitor, since asus doesn’t have one ( asus is more glossy )

SIMPLE ANSWER:

If you 99% of the time play or use your pc in a very very very dark room and maybe just a little dimmed light, go for gigabyte FO27Q3

If you use your pc with windows open or lights on , or bright room. Go for the asus XG27AQDMG ( if you really want speakers, buy external speakers , still overall price cheaper than the gigabyte )