For me what's wilder is that I cannot sell even my "lower-tier" headphones because they sound just as good as my "flagships" on some nights. I tried giving my Denon D9200, LCD-X 2021, and Beyerdynamic T1 a "final audition" before being sold and all three sing like F#cking angels and blow mind with how good they are... sigh. I don't need to sell them except for my 'psychological barrier' that says I must sell some to "justify" purchasing more (LCD-5, Elite, Solitaire P, Hugo TT/Scaler, WA33, etc. etc.) but sadly cannot seem to let any of them go.
Don't get me wrong the Susvara, Utopia, D8K Pro, LCD-4Z do sound "better" (yes more details, blah blah blah) but at a point where it doesn't really matter. I think I just have to admit that my ears have gotten old... too old and not sensitive enough to distinguish between 'mid-fi' champs and modern TOTL. I started in my late teens with the 3 best headphones in the world, the HD650, K701, DT880, driven from first generation headphone amps from companies that no longer really exist. I've aged sadly and have become less critical / cantankerous
My ears and brain are not up to snuff.
Honestly, the LCD-X 2021/D9200 driven from a Bifrost 2 / SA-1 ten years ago would have blown everyone's socks off and would have been god-tier. Now they are mid-fi (sort of). I'm even happy with the Bifrost 2 / Qutest / GS-X Mini even after hearing the TT2/M-Scaler with the WA33 (yes they are better of course) but I think I've reached some kind of threshold where I can groove to the music without worrying at all... confused about where to head next or just stay and enjoy for a while until my ears age even more
(I do enjoy having a large harem of headphones as I'm kind of a head-fi pervert) - hopefully in ten years I can leave this hobby and listen to whatever wireless garbage Apple has released in 2031- old man with blissful dead ears (at that point I'll randomly pick some kid on Head-Fi and send him my Susvara)