LCA bushing Poly or Rubber?

Poly LCA bushings should be used with adjustable strut rods IMHO. The original strut rods are a "one size fits most" scenario. They were intended to work with rubber bushings that allowed more movement, and they only had to be close enough to get to the factory alignment specs. It's not uncommon to find some binding at the LCA as the suspension travels in its range caused by the stock strut rods even with everything set up per the factory.

The poly bushings work great IF they're installed properly. They MUST fit tightly into the old inner shells. But they don't always fit tightly because of the tolerances on the inner shells and the poly bushings. Adjustable strut rods allow for the LCA to be drawn up tightly against the poly bushings to keep them from moving fore/aft. This is true for the originals too, BTW, the rubber bonded to the inner shell is not supposed to keep the LCA from moving fore/aft, that's why there's strut rods to begin with. I also use greaseable LCA pins with poly bushings so grease can be added if they start to squeak, although I haven't had any issues with mine squeaking so far and I have thousands of miles on mine.