The Duffs and Cage arms were designed by the same guy (I believe)--Jim Cole. I ordered Duffs arms mostly because I am an East Coaster and therefore the shipping was less. I received my arms today and I can say they are probably triple the weight of the stock arms. These things are BEEFY. I think the bend others have mentioned for turning with bigger tires is overrated as I can turn around on 25' of asphalt with my stock arms and 35" tires. I think if you turn too sharp and apply power in 4wd you run a higher risk of breaking an axle u-joint and more anyway. I know someone running the WH arms and they are very happy with them--greatly improved road manners, which is really what I was after. For Florida mud, the stock arms are fine for up to 5.5" of lift, but the problem is you cannot regain your caster for good roadway handling with the stock arms. If it's a trailered trail rig--then don't matter. I also liked the Duffs/Cage arms because of the heim joint on the frame end, rather than a threaded stud. I know this will make installation much easier as I won't have to pull and fight with the axle in my carport. Once the arm is bolted on I can just push the heim up to the frame bracket and push the bolt through (I'm sure it'll be that easy, Ha!). Anyway, bottom line is this is an expensive hobby unless you are a fabricator with decent welding skills and a good junk yard not too far away. I think you could build a great and fun trail rig for $5K if you had that situation, but it might not be street legal. That being said, these Broncos can do a hell of a lot with a mild lift a locker and skillful driving. If I did another Bronco for trail riding in Florida, I would stick with 2.5" lift, cut the fenders to the body line to fit the tire I wanted and make sure everything is sealed up well. I would have more fun and less working on it.