TR6 Bushes

Evening all, I need to replace all the rubber bushes on my 1973 TR6. I've considered polyurethane bushes for their longevity, and normal rubber bushes for their cheapness. They are about £200 and £50 respectively. What would you recommend for a weekend vehicle such as the TR6? do polurethane bushes provide more comfort, or is it mostly the same? Is it worth the extra expenditure? Regards Kyle