Smartwool mountaineer suck the big hairy . Mine got wet, stank like nothing I've smelled before, wouldn't dry with body heat overnight, have a sloppy fit, and SUCK. I switched to thorlo (?) synthetics and am very very happy. No stench, dry fast, comfy, and at the end of the day they have not wadded up so half the sock is in the toe of my boot.
Suckwools might work OK for day trips, but for winter overnighters I wouldn't use em.