My favorite socks
I've been wearing Smartwool socks for 5 years now and absolutely love them. They are incredibly soft, but one bit of advice: Do not ever put them in the dryer. You can probably get away with a no-heat cycle, but if you're husband helps with the wash occasionally, as mine does, and likes the power dry setting, Smartwool socks will lose their silky, no-blister properties. Let them hang dry and you'll be surprised at how much longer they last (and stay nice). Same applies for most clothes (and it's probably better for your electric bill and the environment).
One person mentioned quality. I have had over 25 pairs of SW socks in the last 5 years. One pair I bought had a mfg. defect in the toe and it fell apart the first wearing. Those had been purchased at a local shop on Orcas Island and the store owner replaced them immediately. Occasionally, stuff happens, but, overall, I'd say these are a 5* product.