You're free to spend as much as you like on pretty looking wires, consensus is they dont make any audible difference.
Yours also free to fall into sunk-cost and defend them
The "issue" with both of these is that once you pass looks, there is zero evidence any audible or measurable difference exists, and it seems like cable companies or those companies that also make cables take advantage or people who don't know how much they don't know.
You can buy cables with higher impedance that may increase bass or change other things, but it's far easier and cheaper to use eq or buy resistors to plug in
Amir of audioscience review, along with others have tested signals ran through expensive and cheap cables, and by flipping the signal and replacing the result, any difference would be audible, so far I've seen nothing of the sort
Sounds like a you problem, I have 5 Beyer's, no issues. Buy the kit to repair or don't, you can even choose the higher end parts from other models to replace with if you like