Any adjustable bar is a big upgrade compared to stock when you add a lift to get the axle properly centered under the jeep. As mentioned, you can pay more to get better joints. I bought a currie adjustable front with my kit and it’s great but as I finished putting my 4” lift on I realized I also really wanted a rear adjustable to square up and center the axles properly because the rear relocation bracket with the stock rear bar didn’t really fix things as well as I’d hoped. It ended up being an added cost I didn’t initially plan on so I wish I had just bought a front and rear RE or similar. I ended up buying a JKS bar and bracket for the rear and I’m happy with it. So I guess it depends on if you’re doing a smaller lift of maybe 2.5, or a 4”+ lift that really works better with an adjustable bar(s) and then what budget you want to stay within. Just my thoughts.