People are going to disagree with me but anything over ~160hz is pointless imo and very tough to notice, just get a 144-160hz 2k monitor for probably around the same price
I am looking to get a new monitor as well Abed Z. Daoud, but I am looking exlusively for a G-Sync model and 1440 p resolution and 1 ms. I am thinking about the ASUS ROG SWIFT PG278QR, even though ASUS is pissing me off atm.
You don't need those side things. It's more expensive and not needed. Buy a BenQ Zowie XL2411. This one is used for Esports and pro tournaments. It has 144hz and 1ms response. It's amazing.
I use a newer version of this one at the moment.... it's got some shadowy issues actually... and mine has dyac (or whatever it is called) which was suppose to fix this specific issue