I have worn TechSox for a few years now - ever since they got a good review in Motorcycle Consumer News. They work exactly as advertised... comfortable, dry, no slip, no bunching, and quite resilient. Availability was a real problem for a while because the company had been unprepared for the response to the MCN article but I don't know how it is now.
I also have a couple of pair of Sidi motorcycle socks that are a little thinner but just as comfortable. I wear the TechSox in cooler weather and the Sidi socks when it's hot out.