yarn recommendations?

[firecat]

I find myself wanting to knit the Flyaway Free Jacket from Just One More Row. (I would link to JOMR but it's currently under construction.) It calls for bulky yarn and uses an unusual very open stitch.

My question is: What yarn would you recommend? It has to be bulky in volume and lightweight.

Here's one that was knit in Colinette Giotto.

Here's another one; this is two yarns held together and I'm not crazy about the fabric.