I love Addi Turbos for everything. Do a search on Addis and you will see I am not alone.
But in general I use wood/ bamboo if my yarn is slick. Metal or Plastic if my yarn is fuzzy or "toothy".
Take a bit of your yarn with you the the lys and loop it over some of your choices. You will be able to tell if the material will work with your yarn or not.
"I have PMS and ESP. That makes me a *itch who knows everything!"
"Never EVER give up."