In dollar terms, gold benefits as well as other metals from the rise in the euro, and will perform better. Gold has much more worldwide allure as an investment compared to other metals. Silver is a bit of a hybrid. It has industrial demand. There is going be a big decrease in industrial demand. Long term, silver will likely do fine, but the safe bet and likely the highest long term return is gold.
IMO - silver is easier to transact with if the economy ever goes completely dark