I put one on my 782D when I rebuilt the steering a couple years ago. Since I had to replace stuff, I went with the bearing setup. To be honest, I don't really notice too much of a difference. Now when I hop on a Super, I notice the difference...........
Under edit, I agree with Yosemite. Works like the Lazy Susan concept and does reduce wear/tear. If you have to rebuild, couldn't hurt to put this setup in. Not really breaking the bank pricewise.