After discovering wool socks a couple of years back, my cool chilli pepper and Rolling Stones socks are sitting unloved in my sock drawer. Wool just seems to work better for me, both in winter and in summer.

The only advantage is that wool socks do wear out more quickly than synthetic ones, so I can justify buying replacements more often. I have a couple of pairs of Pearl Izumi wool socks that have almost no fabric left on the heel, so need to be retired.