Instead, I am using a Dell 32inch directly in front of me, iMac 27inch to the right of me, and Dell 27inch portrait to the left of me.
But I cannot understand why there are no reasonably priced 5K or 6K monitors of around 30-35 inch. I would buy one in a heartbeat.
4K is sharp but it takes some work getting used to it. You don't gain that much screen real estate if you don't have eyes like a hawk.
I've been using a 40 inch 4K monitor in another setup and it works well for coding at 100%. Entire functions on screen without the need to scroll. But anything else than coding the resolution is a bit grainy at 4K.
Because it's a niche market and unless they become more popular they won't be produced at enough scale to bring the retail price down.
I switched back to a single 32 inch and increased the scaling. Neck pain went away.