Colors of Comfort DK have been restocked. I'm counting over 25 here.
Prism Arts Saki yarn (hand-dyed sock yarn in AMAZING colors).
Also from Prism - Merino Mia. One of our all-time favorites.
A couple of different companies make the same yarn - it's a single ply, wool/nylon, fingering weight yarn with long, gradual color changes. We have Wisdom "Poems Sock" and Marks & Kattens "Fame Trend." (They're the same.)