Ran across this company a few days ago - can't vouch for "lastability", but I'm pretty sold on the "no stink" properties. The owner related a story about an Iditarod racer that was able to pack down from 25 pairs of socks to only 5 pair because he could wear them for multiple days without washing. One guy hiked for 12 days on an elk hunt with ONE PAIR! Besides, how cool is it to have socks from buffalo wool??? It'll cost you though so might fall into the "buy once, cry once" category ($30-$45 per pair). They have all types and weights, not just heavy weight Alaska approved versions.
https://thebuffalowoolco.com/
Spent a few years in the military and have been through many, many companies - none really measured up either and now that I'm retired and can't get the "issued" ones anymore (extreme cold weather ones were best), I'm on the search for replacements. Have several "merino wool" ones, but they only seem to last about the same as all the others.
I'll report back once I have a chance to do my own torture test on them if anyone is interested.
Regards, K