I’m wondering if old Stax (SR-40, etc) are endgame stuff too, and maybe even better than Koss 95Xs?
I often see them for 200$ or even less.
Also, I found this on google images March 1977!
Edit: Can’t find the link, but someone at changstar measured old stax, and they still had a “perfect” CSD graph (more or less 1ms all the way). So apparently… yeah, they last, too.