Front End Suspension Kit - Polygraphite or Rubber ?

I'm planning on a rebuild kit for the front suspension on My 65 Valiant. Currently the suspension is loose - rattles & clunks. I guess because it's a 51 year old car with ?? miles on it. -- I'm leaning toward the Basic Rubber Kit from PST. -- The car is just a casual, fun/cruiser - not a Drag Car etc. - Is there any, compelling, reasons why I should choose a Poly Graphite Kit over a Rubber Kit ?