All the FR-C socks are in my rotation, and for good reason. Excellent comfort and support. I have purchased low, mid and tall. I can unequivocally state that these socks changed my view on how important a great cycling sock is to my comfort level on long rides, as well as quick jaunts.
I wear compression socks due to leg circulation issues all the time, so when I ride I’m also wearing sports compression socks knee-high. But, I still need socks over the compression socks to create proper thickness and shoe fit. These fill my needs perfectly, not being too thick and being extremely well constructed and designed. I’ve been looking a long time for something so well-suited for me.