Same². I started to regret having an ultrawide, until I discovered that it was made for Niri. I never loved my screen and linux as much as I do since Niri.

Yeah it is a dream on ultrawides. I was able to get a decent custom config with Qtile, but Niri is so much more natural. Being able to hit mod+c and center the current window is just so perfect on the ultrawide.

+1, ultrawide curved monitor user, used to be on sway but the experience of niri is next level.