I went with the Beyerdynamic DT 770 Pro 80 ohms when I was looking for a buy it for life option - everything can be easily replaced or at least fixed with basic soldering skills. Three years later and I'm very happy with the sound and build quality and I haven't needed to fix a thing, despite not babying them at all.

edit: I just had a look at Beyerdynamic on Wikipedia and it says

In June 2025, Beyerdynamic announced the sale of the company to Chinese firm, Cosonic Intelligent