These are the Ones.
Bought two pairs of these socks for what I thought was the exorbitant price of US $20.00 a pair. It turns out that these socks have lasted for two years as not only summer hiking socks, but as winter cycling/ski liners as well, making them a real champ in my book. As of this review, they are still going strong, with all the benefits of merino wool (non-stinky, non-shrinky, wicks sweat almost magically, and no holes to speak of).
Top-of-the-line product here, as are all Icebreaker items. I usually wear a 10.5-11 and the "medium" has worked just fine for me. Buy 'em and you won't be even slightly disappointed.