If a manufacturer tries to masterbate the economy with upgrades every few years or even months, should we trust them to make their designs a labor of love? I don't trust manipulative people or corporations. There is too much fraud and snake oil in the audio business: claims that millimeter differences in signal path distances in speaker cables "smear" the signal traveling at the speed of light, skin effect which attenuates speaker signal current only a few hundredths of a decibel at frequencies slightly above human hearing vs DC current, "golden ratio" litz construction of power cables, and battery biased interconnects.
Compare your system's sound to what you hear in a live concert hall and follow the advice everyone else gave on this question.