So many folks here have fine quality components connected with less accomplished cables. Mistake every time! If you need convincing, then do it. Research cable offerings, make a short list of those you would like to audition, and listen. If you don’t hear ANY differences then you are at a point with your system where it is incapable of revealing cable variances. If your music satisfies you then you are at a good spot and should just relax and enjoy what you hear.
If you do hear differences, the real work now begins. What cable sounds how in what system connection? What combinations of cables in specific connections, improves the sound of your music? The one real limiting factor is cost, assuming you have a limit on the funds you can allocate to your cable project.
My last five system purchases have been cables. Four were power cables and one is the interconnect between my line stage and power amp.
one warning…don’t even go there if you can’t afford the cables you audition. You can’t unhear what the auditioned cables brought to your system. That just leaves you with a persistent reality of loss.