If you're looking for an ultrawide experience, the Alienware AW3423DW is fantastic. It's a 34" 3440x1440 QD-OLED monitor with a 175Hz refresh rate. The OLED panel gives you perfect blacks and amazing color accuracy. The 7900 XTX has plenty of power to drive this resolution at high framerates too.

If you want to prioritize refresh rate over resolution, consider a 1440p ultrawide like the Samsung Odyssey G7. It's a 34" 3440x1440 VA panel with a 165Hz refresh rate and 1ms response time. The ultrawide aspect ratio is great for immersion, and the 7900 XTX will easily drive high framerates at this resolution.

Samsung Odyssey OLED G6, it is pretty good for me : https://www.amazon.com/SAMSUNG-27-Inch-Anti-Glare-LS27DG602SNXZA-Warranty/dp/B0D1DPFZLZ?tag=7649-20