When I did mine I used factory jeep lower control arm bushings pressed into .25 wall tubing I machined myself. Bushings were free and I used only used ones, including the ones originally on my tj from the factory. Maybe its luck, but I've never had one "blow out" or go bad (I made custom extended lower arms I ran for a while, then a radius arm setup, now custom linked).
As far as articulation, when I was testing for bind and fit, I had the rear center diff on my floor jack and had my 6yo daughter move the end of the axle from all the way up to all the way down to the floor (about 6" beyond my shock travel). Maybe having a double triangulated 4 link made for very little bind, the 3 link front was same way but used one heim for adjustment on the upper link frame side, it took more effort, but were talking a few pounds more force to move it.
I don't like rebuilding stuff, and the idea of having to rebuild loose joints seems like a lot of work. To pay that much for something I'll need to rebuild after a couple michigan winters or wheeling seasons...
My .02