Polyurethane or Rubber

Hi guys,
I am doing a complete rebuild of the front suspension on my 74 Dart. Iam having a tough time deciding on polyurethane or rubber. I know what characteristics each has and the pros and cons So I was wondering if anyone is running either of these and what they thought. On a side note, I live in Cleveland POT HOLEs rough roads. Not doing any racing yet or anything just looking for what will work best for riding around town.