4267627c_Gold_Versus_Silver__Reason
[Winner] Depends [Silver Details] It may be unlikely that we would return to a gold/silver standard. But if we did, and silver was part of it (bi-metal), and all gold and silver ever mined were divided evenly among everyone, there would be 6.4 ounces of silver per person, and .6 ounces of gold per person. That's if all silver ever mined could be obtained for coinage. Today, a $1,000 silver investment would get you 10 times that 6.4 ounces. [Gold Details] This also shows that gold is very rare, with less than an ounce per person to go around. [Reason] 
Return to Gold/Silver Standard
Gold Versus Silver
Reason