I definitely like how my current active speakers sound with AudioQuest interconnects (definitely better and more refined compared to sound with grocery store/amazonbasics-grade crapwires), and I nuch liked how my previous passive speakers worked with AudioQuest speaker cable (pretty old Slate, modern equivalens should be AQ Type/CV/Rocket lines). Again, for cleaner, solid, refined and overall "settled" sound. I overall prefer comfort sound, such as Dynaudio concept of "a bit bassy and easy-listening version of flat" and definitely don't like, say, KEF (boring and sterile nobass) or cheap JBLs (how even listen to that).
So at the end I see nothing bad in spending $ few tens to few hundreds if that makes any good changes to lovely system or a feel of such changes at least. Tried few times to live with some grocery-grade interconnects (including DIY) when I had no good cable options with required lenght and hey, that was definitely not that best sound, so here we are.