I learned to knit on metal needles with the acrylic yarn of the seventies... stiff nasty yarn, and cold, unyielding needles. I've been using the clover bamboo needles... and i am in LOVE! They are warm, and smooth, and light. They LOVE the wool.. and yes, although i still occasionally crochet with acrylic, wool is the yarn of choice. Clover bamboo needles are easy to find... JoAnn Fabrics, AC Moore... Walmart hasn't caught on yet, but they will.... I have a circular thirteen that i have used on several projects... some real abuse... and they are still smooth and easy on the hands. I would recommend them without hesitation!