I think I have about 20 pairs of Darn Tough socks and
no others. I've accumulated these over the last 10-ish years. Short ones for running. Tall, thick ones for winter. Thin ones, medium hight ones, the list goes on.
Over the ten year period I've sent back three different pairs. Basically socks that developed holes prematurely (in my opinion). In all three case, a new pair were sent out in return, no questions asked. I've chucked out a couple of pairs that were so thread bare you could see through them- no way would I send a pair like that back
. Multiple years of service is more than can I ask out of a pair of socks.
Never wear a liner, just the appropriate weight/height sock.
Darn Tough makes great socks.