I'd suggest hardware cloth like everyone else.

Your chicken wire may have worked for now and it's true that it is way cheaper (I was even planning on using it for my new run before this thread!), but if/when a predator breaks down your chicken wire and gets in, you'll just be losing your poor chickens, and your chicken wire. In the end, a waste of money on the wire, and (this feels so wrong for me to say!

) on your poor chickens since they could all be wiped out in minutes. They could be fine for 10 more years with chicken wire, but the second a predator really wants one of your chickens and your roo, guinea fowl, or you aren't there to alert you/chase off/kill the predator, you're going to at least lose a couple.