I do not believe in audible differences between 2 properly made Ethernet cables of Cat6 or better. What I do believe in is never using the absolute cheapest example either. So I settled on Belden cat 6e. Belden individually tests each cable to ensure it’s up to proper spec. I chose cat 6e over 7 or 8 because there’s some evidence that the extra shielding in 7-8 can potentially cause ground loop issues. And cat 6e avoids this and is WAY faster than your music is streaming. It’s my opinion you can’t do better for an Ethernet cable. And it’s about $30 shipped.
By all means spend $2000 on a data cable if you just like having cool, expensive cables. Nothing wrong with that if you can afford it. But I do not think your $2000 Ethernet cable is getting you any actual advantages.