I remember reading somewhere a while ago that Koigu sock yarn and Cherry Tree Hill sock yarn are the same - that they are spun at the same mill, and what makes them different is how the two companies dye them. I don't remember where I've heard this, but they certainly seem very similar.
Can anybody confirm this? It's not a huge deal, but I've wanted to try Koigu, and my LYS sells the Cherry Tree Hill yarn. I have heard great things about both, but it would be nice to know I could give both brands a try at once, if they really are the same under the colors.