I tried out my new Knit Picks Harmony wood needles this week. They splintered in the first three minutes--a huge sliver about 1.5" long broke off, starting at the tip. So I packed all the KP needles that I bought, including the metal interchangeables that keep coming unscrewed, and returned them.
Yes, the prices are attractive, but I'd much rather have functioning needles that cost a little more. I'm sticking with my Addis from now on.