What's funny is that the cheaper ksc75 (ksc75x) also by koss like the porta pros, are highly regarded as a great budget headphone by most audiophiles.
They can be modded like the porta pros with a headphone band, new pads and removable cable but as long as you look after them they don't need to be.
They're comfortable, cheap and sound great. Not for bass heads though.
Fellow keyboard snob here. Gotta say I love keyboard that use VIA/vial for software, It's open source and can run in a browser without installation.
Wooting keyboards also have the wooting configuration software that is also ran in a browser and is very good.
Just hope one day they all get supported on firefox.