lieuvena - I have found that I use both the harmony and the options. the options for cotton or silk because it tend to stick to wooden needles even the harmonys. but I use harmony now for socks and lace to keep control of the stitches better.
Off to dig out my hibernating log cabin and yarn so I am ready tomorrow. Thought I would try to do one strip a day, I started a traditional log so will just carry on adding to it.