Replacement Monitor & GPU Suggestions

I purchased 2, 27" QHD 144hz monitors back in 2020, now one is showing dead pixels, the other appears to have a crease.

I like my monitors to match or at least appear to match, my OCD can't handle otherwise.

I'm looking for a 240hz OLED if possible or a general 240hz gaming monitor worth investing in as I play at a heavily competitive level in certain games.

Obviously as long as they visibly match a 240hz OLED for primary is preferred and a 240hz IPS is fine for the second.

I want to get everyone's feedback and general experiences on this, Preference is that I not spent more than $550 on a monitor, 500 or sub is preferred but not a deal break, and for an IPS panel sub 300 is also preferred.

I'm also going to be looking at replacing my EVGA 3080 GAMING with an upgrade and am considering a 5070, however... I'm also considering a 4070 SUPER TI.

Performance overall is my primary focus.

Stats for existing build:

CPU: 7800x3D
GPU: EVGA 3080 Gaming (10gb Memory)
Memory: 64gb 6000hz Corsair DDR5
Motherboard: ROG B650-E

any feedback is greatly appreciated. Thank you.