I find myself returning time and again to Quince & Co. I'm loving the somewhat muted color palette of the soft wool yarns and the simple, lovely designs. Plus, it's just a beautiful website.
Recently, I ordered a sample card and, just to see, one skein of "Lark", a light worsted weight of American wool. I'm making a pair of their "Moira" mitts with it. The yarn is pretty comfortable (I'm a bit sensitive to wool). It has a really nice smooth texture, kinda bouncy. I'll bet it would be great for doing cables.
The yarns are sold online only, for now, with the exception of one shop in Portland, Maine. Hopefully, during my Maine road trip in a couple of weeks I'll be able to stop by and fondle the yarns in person. Not that I can really buy much--not until I make a dent in the stash anyway.