Sucker Rod is great, but people who sell it in South Dakota are sure proud of it!!! It's cheaper here in Texas! But, like Jigs said it will last longer than anything. Although with sucker rod the only downfall I've seen is if you don't space it small enough at the bottom of your pens, calves tend to slip through it like a greased hog! Kinda like a mink or a coon, if they can get their head through the rest of them will fit, especially the way it has some pliability and moves. We've also got some pens made of Guard Rail....but when you have a mad bull or cow or wife or something after you its sure hard to climb, especially if its wet! I'm not married, but a lot of you are and i'm sure your wives chase you with branding irons around the corals!!!!