TLDR: It looks like a decent screen, especially if you find it at a discount. If you can run modern games at 1440p@60 then you should be able to run "competitive" games (LOL, CSGO, Overwatch) at at close to 1440p@144hz. I wouldnt buy two screens, since that would be a waste of money in my eyes. Rather spend it towards a better graphics next time or maybe get a screen with adaptive refresh rate. Those are typically more expensive.
I got this monitor for a Black Friday deal at around half the price of the ASUS PG27 series (both TN and IPS). This Samsung screen uses the same panel as their quantum dot HDR screens. I've also had a chance of having all 3 of them side by side for two weeks now for comparison(Samsung, PG278QR and PG279Q).
Even regardless of the price, my unit has a tiny amount of backlight bleed compared to ASUS models that have piss poor QC. No horrendous IPS glow either since it's a VA panel, excellent black levels.
The image quality is very close to the ASUS IPS model, if only a bit less vibrant. Miles ahead of the ASUS TN. Responsiveness is on par with the ASUS IPS@144hz, while obviously behind the TN, as tested by eye without any tech.
The only negative I can say is that it has some color banding when looking at test gradient images. However, I wasn't able to find a single game where that is at all noticeable. The one game I did find it in (destiny2 on the aurora borealis at the loading screen), color banding is present on all 3 screens equally, so it might be a game thing.
No G-sync or Freesync...
Otherwise, an excellent screen for the price, especially if found at a discount, imho. Oh, and did I mention that it doesnt seem to have garbage QC as the borderline not fit for purpose high-end IPS and TN panels from ASUS and ACER?