My partner does photography and has a Datacolor Spyder 4, which I of course borrow to calibrate all my monitors. At work I have a 30" IPS and next to it vertically an old 24" tn-film. After calibration, they are very close color-wise and they both are very enjoyable for reading code. The tn panel has worse viewing angles and about ~80% of sRGB, but after calibration it is absolutely much nicer even for development.
I calibrate my monitors with DisplayCAL[0] on Linux.
There should be one calibrator in every office, the difference it makes is enormous.
[0] https://displaycal.net/