I wouldn't go for higher than 27" with 1440p because of PPI. You may want to look into 4k or UW 1440p monitors for a higher diagonal.
Titan Army recently launched their G27W8S, which is a 350$ 26.5" OLED monitor.
I have a 1440p 1152 zone MiniLED IPS of theirs and it's honestly really good. My only complaints are nitpicks, which can be ignored considering it was like 200-250$.