I recently splurged big time and bought a Signature Arts circular knitting needle, size 7. These are relatively new style needles, made of aircraft aluminum. Not only are they beautiful, they are extremely well designed and great fun to use. I feel like I'm zooming through my knitting now, like the little boy on the car commercials who says softly, "zoom, zoom."
All future projects with be knitted with this size 7 needle! Now I realize my socks will be way too big, and my sweaters way too small, but oh, well. I love this needle.