Having been blessed with a big foot it is always difficult to find socks that fit properly.  Gold toe is one of my favorite brands as they offer the 13-15 size on different styles.  The crew socks they make are, in my opinion, the best on the market and they are available in both black and white.  My issue with these socks surrounds the way that they stay up.  The narrow band of elastic at the top tends to allow the sock to work its way down my leg and requires constant attention during the day.