Advice needed: Good gaming 27" 1440p/4k 144hz+ monitor suggestions (In $AUD)

Hey all,

As the title suggest I'm after recommendations for a gaming monitor that's 27inch at least, but definitely no bigger than 32 and is 1440p to 4K without paying through the teeth.

Ideally would like to get the LG UltraGear 27GS93QE-B 27” OLED QHD but it's around $900 aud, I wouldn't want to spend more than $500 aud.

Also would it be more immersive to get a curved monitor or flat? It would be used for gaming and general computer use, and since I haven't spent much time looking at a curved screen I don't know what it would be like for both applications.

Look forward to reading some responses!