Paul - For the vines I was using, I preferred the cattle panels. Some of the wire fencing has wider mesh, which is what I was looking for. The other panels would probably do just as well and it is more of a preference thing.
I also realized that I could get 2 arbors from one cattle panel. Thinking as frugal as I do, I thought that was a bargain, since I wanted several arbors in my yard. I still have plans for 2 more arbors in my yard. (As if the current 4 aren't enough.)