As for the thread, I've given up with my opinions about DACs, because everyone hears things totally differently.
I've built mine do far around a basic commercial board with an AD1865 non-oversampling chip and AK4118 receiver. The issue now is that the AD1865 is well out of production and getting harder to find, plus inevitably there are tons of fakes around. I still have one spare board, which will eventually become my end-game DAC (until I build another different one). They don't have to suffer excessive audible treble roll off in the audio range, not be plagued by excessive distortion, but I generally can't stand all the stuff that I am told measures perfectly because to my ears they all sound like wallpaper strippers and rob all the life out of the music.
Your 'detailed' and 'perfect' is my 'all the musicians seem to be on their lunch break'. I don't give a rat's fundamental how my stuff measures. I use a single-ended big triode power amp, a valve preamp and the DAC has a valve gain stage. However, the DAC uses a pair of paralleled 5670 valves, and the preamp uses 5687s. Run at the right point in their plate curves, both these types are highly linear and offer minimal distortion.
I quite agree that there is no audible difference between most well-measuring DACs, but then all I can say is that something obviously isn't being measured that has an effect, because they're mostly apalling to actually listen through at length. To my ears. Just lifeless elevator music.