I have worn these socks for, well, longer than I like to think about. To this point I have bought them again and again because they were manifestly of good quality and were very comfortable. The last two orders, however, have convinced me that they will have to be the last. The way the socks are made has changed radically. The material is very stiff, rather than the spandex-like material which fit and stayed up so well. within a washing or two, the top particularly had lost its shape and would no longer stay up. In past years, I was usually obligated to buy replacements because the heel was thinning, but even then the tops were still staying up well and maintaining the shape.
I guess economics forces changes in everything, but these socks are relatively expensive (as socks go, $17 for 3 pair). In the past, I didn't mind paying a premium. Can't say that any more.