Speaker Cable Suggestions

Cables cannot "change" (for better) the audio program

At least you are right about one thing. However, they can, and all do, take away from the signal that is being sent. That is without exception. The best cables take away the least or inject their own voice the least. The I know science kool aid is so strong that some can’t accept that we don’t know everything or that it is entirely possible that we don’t yet know how to measure everything that matters in respect to human hearing. That kool aid is very strong.

Speaker Cables cannot "change" (for better) the audio program, but they can certainly alter a highly complex load (impedance) so that a listener might like the resulting sound better.

No need to spend a lot of $$ to get that however.

Unlike the woo-woo with interconnects, the alteration of sound from speakers with complex impedances by speaker cables is well understood in electronics.

Wow another useless cable debate. I am sure the bulk of this was no help at all to the OP.

the only help for the OP is to try different (inexpensive) cables from one of the 'rental'/return places until he finds something he likes

no way to predict what sound alteration will be most pleasing