for most of teh last 15+ years I've been wearing several 'models' by Brigedale. I bought a couple of pairs of their thickest polar ones earlyon and they are still going. Currently I have a pair on that I think are an autumn range (I honestly don't know what models they are, I just look at a picture/the sock and pick it up if it is what I want). The warmer weather ones with pile toes, soles and heels but thin fabric elsewhere weren't quite so good but still did years.
Mostly these days I look on Ebay for seconds and end of lines, s they cost a fiver each instead of ten quid. Normally seconds is a small hole that develops at the toe, but that is a few stitches and is done.
BTW, I don't just wear these socks a few days a month. I have worn them as my daily socks in steel toecaps for the last 14 years too