In my experience, you really want to prioritize two things for the PS5: 4K resolution and HDMI 2.1 support. Since you have about $450, the absolute best bang for your buck right now is the Gigabyte M28U 28-inch 4K 144Hz Gaming Monitor. I have spent a lot of time testing different IPS panels over the years, and this specific model handles the PS5 features like a champ without breaking your budget. To clear up the confusion about hertz (Hz), it is basically the refresh rate. Think of it as how many times the screen redraws the image every second. Since the PS5 can output at 120Hz, you need a monitor that can keep up, or you are basically leaving performance on the table. Without HDMI 2.1, most 4K monitors will cap you at 60Hz, which makes fast games like Call of Duty feel way less responsive than they should be. I have tried many budget options, but the M28U is special because it includes Variable Refresh Rate (VRR) support. This is crucial because it prevents screen tearing when the game's frame rate dips during heavy action. Honestly, dont overthink the 144Hz label too much since the PS5 won't go past 120Hz anyway, but having that headroom ensures a very clean image. Just make sure you use the high-speed HDMI cable that came in the console box to get the full signal.