Irene worked her version in Karabella Aurora 8, which is a great substitution idea for this pattern. It's a little springy-er--meaning it's a springy yarn--heh, I mean, it's like a spring, you know, like a Slinky or something that bounces back.
Yeah, that's it: The Karabella has more bounce. (That was tough, describing that yarn without having to sound like I was making a pun.)
http://go.azstarnet.com/designerknits