The largest variation in quality of music and sound presentation through your speakers is probably due to the recording and/ or mastering process. The cable, and electronics debate imo seems almost superfluous. If you want your hifi to sound the best, look for good quality recordings and skilfully mastered ones.
If our lexicon on what makes a relatively and discernibly better recording can be brought to the cable (or electronic) story in a similarly palpable manner during comparison eg. "more open, clear, detailed without the harshness , impactful, well balanced, exciting without being offensive, good separation of instruments, realistic voices" etc., it would be something interesting if not, a waste of effort.