I switched to an ultrawide and will never look back. My last setup was 2 monitors. Having 2 1440p monitors basically stuck together to make an ultrawide is a dream come true. It’s 100% worth the switch.
My M1 Air runs my ultrawide at 60hz and is buttery smooth.
IMO, 1440p is too low of a pixel density for productivity. My first 1440p monitor was 10 years ago. If only 2160p ultrawides weren't prohibitively expensive.
I highly recommend the Dell UltraSharp U4919, of which I currently have four (two at home and two at work). Almost my entire department switch to them as soon as they came out.
My other ultra-wide is an ASUS PG348Q. It's crazy how that monitor felt huge when I got it, but it just seems tiny now.
My M1 Air runs my ultrawide at 60hz and is buttery smooth.