IMHO, it all depends on your balls (keep your mind out of the gutter!!), --steering arms & pitman arm. If they are new and polished, they are a huge improvement yet if the balls are worn or rough, you will not see much of an improvement and the longetivity will not be long. We generally install 12-15 sets a year, ...and have for many years now, and they have a good track record in our eyes.
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3,000 grit wet or dry sandpaper.What do you use to polish the steering arm balls?
I install them all the time on front end rebuilds and they are the way to go. I of course still assemble and use grease on them and use rebuilt arms from A&L or good originals that are still round. I probably do 12-20 sets a year as well and they do well. Brattons and Snyders kits are different.. I prefer Snyders but Brattons is good as well.
Steering arm assembly's can be done on the bend and installed with the arms as a unit.
Larry Shepard