Lots of good info here. I have picked up some great ideas. My favorite sock are Darn Tough merino, with a lean to the full cushion. Do not buy DTs unless your sock supply is extremely low. My preferred sock was the REI light hikers until I bought a pair of Darn Tough. I still like the REI sock, but when they are worn out, I will replace with Darn Tough. You will love the way the DT fits and massages your foot. I have worn other wool socks, but I will stick with REI and Darn Tough as long as they remain quality like they are.