I went into my favorite LYS to find sock yarn yesterday as an apology to my husband who had to deal with aa pissy parrot. I was told that there was a wool/cashmere/nylon, and therefore machine washable sock yarn that I had to see. Wow. Love at first sight. I cast on as soon as got home, and the only complaint that I have is that there was one knot in the skein, and that the yarn is a tad bit splitty.
But- it is amazing. So soft and lofty. I hope that I have enough for my husband's huge feet.
*I would provide links, but my migraine addled brain is beyond that.