Purely in the interests of research (my story and I'm sticking to it), I've been trying out some new needles.
These circs came from The Knitting Zone. The metal ones are made from stainless steel; the others are resin-soaked bamboo and both types are nice and pointy, have smooth joins and come in size 2.25mm which is good for knitting socks.
I'm a bit of a fan of flexi needles. These came from Scottish Fibres and they're made in Germany from either rosewood, ebony or bamboo. I haven't had time to swatch anything with them yet, but they feel very promising!