I’m sure there are plenty of great sock companies out there, but there are three big reasons that I run solely in Darn Tough socks. First, they are made in Vermont right near my hometown. Second, they fit perfectly and never cause blisters or hot spots. Finally, see below. Yes, even if you wear holes into your socks running 70 miles a week, they’ll replace them forever. No questions asked. Highly recommended!
(and no, I received no payment from DT for this endorsement.)