Sorry for the boring post!
The last couple of years I've mainly worn bamboo socks as they're so soft, but I find the heels and toes wear out really quickly, and some of them go baggy and end up falling down and crumpling under my feet. But before I discovered bamboo I used to find lots of socks quite hard and uncomfortable.
Any recommendations for plain black ankle socks that are soft, stay up, and last a fair while with lots of walking?