A Dell U4021QW 40" 5K2K ultrawide I recently bought gently-used, which replaced the very similar (but lower-resolution) U3818DW I had bought gently-used in 2017.
Why? Two main reasons:
* My M1 Mac, which I can't imagine replacing just yet, only supports one external monitor, but has no problem driving a 40" 5K2K behemoth. I might as well have one of those.
* The built-in Thunderbolt KVM features of the U4021QW and the other Dell ultrawides in this series are just fantastic. M1 Macbook connected by Thunderbolt, Windows desktop connected by DisplayPort, Linux NUC connected by HDMI, all sharing a webcam and other peripherals, works flawlessly with great cable management.
The new 120hz U4025QW looks great, but is still rather pricy. Hopefully in 5 years I'll upgrade to a hypothetical OLED 120hz version of this monitor.