Since I appreciate yarn that knits up quickly, I selected chunky, but I've got lots of variety in my stash from fingering to bulky. It really depends on my mood. Sometimes I like the feel of big squooshy yarn on substantial needles, while other times I enjoy the precision of skinny yarn on teeny needles.
I guess you can say I'm an equal opportunity knitter, at least when it comes to gauge. I've never gone above US 17 or below US 0, though.