Not Mac user but here is my experience with multi-monitor. I used to have 2 32" 4K monitors at full resolution. One was pivoted to vertical specifically for cod

Not Mac user but here is my experience with multi-monitor. I used to have 2 32" 4K monitors at full resolution. One was pivoted to vertical specifically for coding. My main desk resembles an airfield so space wise it was ok. However recently I found myself tired to turn my head and body when shifting attention between two. I am back to just a single 32" 4K. The other monitor went to a different computer.