First job I had was a pair-programming shop that outfitted each station with a 27" iMac and a 27" Cinema display (along with two sets of mice and keyboards).

Second job was remote, so I outfitted my own home office. I upgraded from a 34" 21:9 monitor to a 32:9 monster and enjoyed having the equivalent of 2x27" monitors.

I've since upgraded that setup to add a 28" LG DualUp to the left side of my 32:9 ultrawide. It strikes a nice balance of a productivity display for calendar/email and one for my main workspace that's plenty wide for spreadsheets (because I write less code than spreadsheets for FinOps modeling work).

I'm a huge fan of wider aspect ratios beyond 16:9 or 16:10. The dream is a 32:10 monitor in tandem OLED.