if you (me) don't have FU money and even if you do, the law of diminishing returns is different for each of us. Someone that can still hear to 16 khz might justify an extra $10k for diamond tweeters while someone who's hearing's gone by 4k likely wouldn't hear the difference and only spend for the upgrade to have 'the best'. I've currently got a pair of $15k and $30k speakers in my listening room that do things well enough and differently enough that someone not aware of hi end audio might not be able to tell which cost more, Most dealers can set up a $500 pair to challenge a $10,000 pair by optimizing positioning of 1 while not taking care in the placement of the other, why dealers skilled earn their money, right. anyhow fun convo with no single make or model answer.