I do find Amir's DAC measurements fascinating. It's pretty clear that the only thing you really pay for with the expensive stuff is the jewelry box and perhaps a highly upgraded power supply and analog section, if that.
I jumped off the DAC bandwagon many years ago when I bought the Sonic Frontiers top of the line tubed DACs with ultra analog chips. I had bought a Yamaha RX Z9 receiver. I compared the receiver DAC with the Sonic Frontiers and after many comparisons, the Yamaha sounded better, clearer, cleaner, to my dismay. I also heard a lot of DACs at audiophiles homes, the EMM labs stuff, and honestly did not think they sounded better by comparison. I just concentrated on my vinyl, which I love, and listened to digital whenever.
DACs have gotten much better on a routine basis, but I remember posting a comment on the subjective, magic box 'n cords site "Is there anything that becomes an expensive doorstop faster than a so-called state of the art, ultra expensive audiophile DAC?" to a resounding cold shoulder.
I can now listen to 128kbs music through my Yamaha Pre/Pro, and have enjoyable listening sessions, which probably means my subjective audiophile credentials are ignominiously stripped forever. 2 carat instead of 24 carat, I suppose.