Now, what I've just stated is an hypothesis. It should be testable. Meanwhile, Blue Jeans Cable represents roughly the point of diminishing returns for me (at $1.90/ft. for Canare 4S11, 14 AWG, unterminated speaker cable). More power to you if you can hear an improvement from a much more expensive cable with the same length and gauge as well as correct, equally secure connections
Now I will agree as I have conducted with experiment using my Moon 600vi and SF Olympica Nova 3. Using Transparent Cable Gen 5, Raven Audio Soniquil Cable and Blu Jeans 4S11.
all properly burnt or run in and then switched out cables and at no time did any of these cables diminish the sound quality or out right out perform the other, to point of saying cable X is a giant killer or cable Y was worth the $800.00 more it cost.
I think if it works for than use it and if $5000 cables make you feel good then buy them.