Oh, by the way, I forgot to mention that I went down a needle-size in the Koigu socks. I had been using US2s on Koigu, and I went down to US1s. I really like the higher density of the resulting fabric. I've not cared for the way that other Koigu socks I've worn have been mildly uncomfortable in hard leather-sole shoes; I've always been able to feel the individual strands biting into my feet where the hard leather rubbed. The higher density on this new toe seems to result in a more consistent and hopefully more comfortable fabric. Time will tell.