I decided to return my ASUS XG27AQWMG and fortunately they refunded me immediately even though I haven't sent them the monitor back. With the refunded money, I decided to purchase the same model again. Upon opening the new one, both of them were manufactured in December 2025. So, I thought, I won't be seeing any big differences between them.
Both of the monitor side by side with File Explorer Dark Mode open:
Left is the second purchase; Right is the first
Side by side with the favorite gray uniformity test video:
Left is the second purchase; Right is the first
The new monitor has better grey uniformity, still not perfect but better.
I don't know if it is just me, I noticed that on white screens, they have subtle differences.
Left is the second purchase; Right is the first
As of today, I already dropped the first monitor off to the return shop and decided to keep the new one. Did I make the right choice?