Stupid LCA question!

I plan on putting LCA bushings in my swapped Integra rear suspension components. I'd like to get some aftermarket LCA's with poly bushings, but I don't know if its beneficial? Does an aftermarket LCA like Omni Power or Skunk2 make a real difference in performance. Is it just a cosmetic thing? I know that these aftermarket pieces are lighter, stronger, and look awesome, but will these parts be better than me just replacing my worn out rubber bushings with polyurethane bushings. I'm looking for more function than looks. I plan on doing the monumental task of replacing all my bushings with the Civic Master Polyurethane kit this week. I'm not looking forward to it. Anyone have any theories or facts to school me? Thanks