After owning Revel Studios (a very highly regarded loudspeaker in the early 2000s) for more than 20 years, I decided it was time to replace them even though they still worked as well, I think, as when they were new. So, why?
Comparing my Studios with several current state of the art speakers (and employing equipment/cables as similar to what I own as possible), it quickly became apparent to me that 20 years of speaker technology developments had wrought some real improvements in sound reproduction.
Accordingly, I now own Magico A5 and am enjoying vastly improved clarity, soundstaging, and imaging.