Chains are way easier to maintain, I have two zip lines that I rarely use (usually young dogs get to run on them) don't trust them with the older dogs. I do have a hog panel kennel I love, but comparing chain areas to kennels is like comparing addition to quadratic equations. (just my personal opinion)
Could you post a pic of the hog panel kennel that you have IpK? I'm going to try my hand at one here soon. If you can't, that's cool!
I will take a pic of it and post it when I hit a computer.