Looking at a 3-4" short arm lift for my LJ and I'm curious what about the RockJock stuff is actually better than a similar JKS or BDS kit.
They all seem like similar parts and JKS and BDS have been building suspension parts for many many years. I had their track bar on my XJ and I was very happy with it's function and longevity.
John Currie has a history of involvement in racing and building quality part that far exceeds JKS including entering in the first rock crawling competition in Las Cruces, New Mexico. Their vehicle was a Jeep TJ.
https://www.currieenterprises.com/about-us