I think any differences heard are so miniscule per dollar spent, you’d be better off buying better components than changing a cable.
When swapping components in the ~10 - 20K MSRP range, the differences are significant but matching considerations with the other components dictate whether the resulting system configuration is good or bad. Swapping copper for large gauge solid silver speaker cables provides me a "yeah that’s better" reaction with all the "good" system configurations. It’s not that copper sounds bad, but silver gives more lifelike detail. That, for 2K - 4K in used deals, was well worth it to me - the next level up in components is not going to be achievable for that little extra amount.