Looking to but my first oled monitor but need recommendations

I’m trying to upgrade my monitor ips 180hz 1440 to a new oled but my budget is 450 and lower in the United States. I’ve seen a few but don’t know what to choose right now it’s between Samsung 27” Odyssey OLED G5 (G50SF) LS27FG500SNXZA,

AOC 27" QD OLED Gaming Monitor,

Acer Predator Gaming Monitor | 26.5" WQHD,

or Alienware - AW2726DM 27" QD-OLED QHD 240Hz. If you have anymore recommendations please help

Thx