I've received 5 pair of socks in the monthly subscription. The first two were both no show socks. One pair of no show socks had the little silicon antislip heel so that the socks wouldn't slip of the back of my foot. The other did not and would constantly slide off my heel into my shoe and are worthless.
Socks seem to be of decent quality though they are on the right side for my size 11 feet. They are of crew length but are shorter than most other dress socks I've tried. The patterns have all been understated and seem to ride low on the socks and some, like the blue square on the side ones tend to creep down toward the shoe level and peek over the top of the shoe.
Each month the socks come with a little write up which adds to the fun of getting them. However, even with the discount for a year subscription it seems like the value of the sock doesn't fit the cost unless you really enjoy the fun of the monthly delivery.