Cortexi performance is audible (or visible) enough to even an untrained ear Benefits (or eye). But that does not mean you would be wise to use high-end cables. In fact, minus the latest 42" LED TV clearly $2000 home entertainment system system, there is really no need to buy anything further than standard copper cable. For lower end system, ordinary cable is more than proper.
https://www.tribuneindia.com/news/brand-connect/cortexi-review-2023-scam-alert-21-days-unbelievable-results-and-side-effects-exposed-496063

https://groups.google.com/g/cortexi-benefits/c/wiSmLGGy8OY

https://sites.google.com/view/cortexi-drops-benefits/

https://cortexiprice.blogspot.com/2023/04/cortexi.html

https://events.eventzilla.net/e/cortexi--price-benefits-ingredients-uses--side-effects-2138592015