I’ve replaced the standard pads on a pair of MTH-50x with the angled protein leather ones from Brainwavz and didn’t notice the sound change much, if anything it changed it to being slightly more open and lively.
The same couldn’t be said of the micro suede pads on a pair of M1060Cs though. But nothing that couldn’t be fixed with a bit of EQ.
They are both good pads though. I’d recommend Brainwavz.