I am totally happy with these socks! They are comfy, seem to (so far) be well-made and fit me very well (I am a size USA 8).  I have skinny calves and they are tight in the leg, so someone with bigger calves may be a little uncomfortable in them if they pull them all the way up, like I do for work.
I like the way they are fitted around the arch to keep them from slipping under your foot.  I would buy these again!