More on German Opal
There a couple places online to get their patterned yarns, but after a google search I found this place that sells the solids (and I just realized they're in Utah too!). I've never ordered from them, so I can't tell you whether they are good or bad to order from, but also, PTYarn (the Opal distributor for the US) has a shop list arranged by state. If there is a shop in your area that sells Opal sock yarn, it should be on that list.
And look! Another Eleanora sock! They're taking over! It looks great Durandir!