These are by far the most comfortable socks I've worn, and I've been a Smart Wool fan for years (still am).  Yes, they do not stay up, but for some reason this has not bothered me at all.  I don't even notice it.  So, after trying these out this fall, I'm back for another 3 pair.  The price is right, especially compared to Smart Wool, and my feet will be warm all winter.  If you are worried about wool being itchy, I have very sensitive skin, and you would never know these socks have any wool in them at all.  They also launder very well.