I have the large and 16in. interchangeable sets and really enjoy them. You can have a project going with one size needle and another with a different size depends on your supply of cords and projects. Needle size discs are supplied so you can string one on to a project cord when/if using the tips on another project. I particularly find wood much easier and more comfortable on the hands and fingers to work with and I like the stitch these give. The only flaw might be that the size number paint can wear off, but you can always check with a gauge, or just by looking at the sequence of the tips in the case.
Although I have knitted a pair of socks, and have started another, I use this yarn primarily for shawls. Allergic to wool, I try to find alternate fibers that provide warmth and/or function, and Comfort Sock has provided a favorite alternative.
I have knit socks with this yarn and enjoy it and the socks. I have also been knitting one skein butterfly shawlettes on size 8 needles and they come out soft and lovely. I am allergic to wools, so this yarn has come in very handy as a substitute in various projects. I also knit in other Comfort sizes regularly.