I have a size 15 foot and have lived my life wearing socks from Wal-Mart that are not comfortable at all.  Last year, I made the amazing discover that, if I buy size 15 socks instead of the size 13 in the store - they feel better!  Imagine that!

After making that discovery, I went online and picked up some of these Thoro light hiking socks for wearing outdoors and I can't even describe how much my feet have appreciated it.  At this point, I wear them every chance I get.  They have held up great (I wash them inside-out as recommended), and are as comfortable as I could ever want.  I've tried several different brands of socks in the last year and these Thorlos have been the best all around.

If I had to come up with a complaint, it would be that they really aren't that 'light' when the weather gets warm here in TX.  But, they aren't so hot I can't stand them either.

Overall, if you've never owned nice socks I think you will probably be blown away by these.  If you have, then I find it hard to imagine there is anything much better out there.