mid fi as a term is derogatory, for sure
but i have perhaps unwelcome news for those who think the law of diminishing returns kicks in at a grand, you are very very very wrong
if people know what they are doing, and have a workable room, immediately noticeable, better sounding systems result from more $ spent, well into 5 and 6 figures
you don’t need golden ears, just functional normal hearing and a decent appreciation for music