I may take some heat for this

if so, fire away, I'm a big boy
I never actually wear out a sock, the occasional one may get thin in the toe, but mostly it's a 'bored now' thing. I got onboard the 'crazy sock' fad for a while but it got tired quickly.
I wear navy and charcoal suits so socks are a variation on grey, navy or black depending on whether I'm wearing brown or black shoes.
Casual socks are mostly navy and from Calvin Klein, it's easy and good quality.
Gym socks are for the gym, they come from underarmour or addidas.