About a year and a half ago I bought a 27" 1440p 144hz ips freesync screen from acer and it's fantastic. Only thing is that 1440p is more demanding than I thought and games like CoD warzone can't run with 140+ fps on an i5 9600k and rtx2070.
If you have a beast of a computer that can run all games at crazy fps, then for sure go above 1080p because it looks fantastic. But personally I regret it, because I end up downressing to 1080p in some games anyway and it looks really bad on this screen.
I'd go for a 24" 1080p 144hz if i had a second run at this purchase.
Edit: This is the screen if you're curious: Acer 27" Nitro XV272UP