I have a set of the smaller gauge chiaogoo twist interchangables and I love them! The metal is smooth, the shape is good for me (pretty sharp and pointy), and the red cables do not kink. I pretty much only use those and hiyahiya metal double points these days.
I have friends who swear by the knitters pride/knit pro karbons, but they feel a little sticky to me. I get the same feeling from wood and bamboo needles. I knit continental. Not sure if that makes a difference.
Do you have a chance to try out the needles before you buy, or just buy a single circular as a test? I think it depends on your knitting style and the fibers you like to use.
That's a very clever idea! They look super cozy. Thanks for sharing the link.