It should always be gold rather than silver or other precious metals. Silver is an industrial commodity, it is not a monetary metal or crisis hedge.
Like the guy says in Avatar just before he gets on the big red bird--"At some point in your life you've got to do something insane" (or something like that). I'm still waiting for my "Avatar Trade".
So true. When the Spanish looted the Incan gold stockpiles and brought it back to Spain it just became cheaper. Gold is not valuable, its the idea of gold that is valuable and the market will always reflect that.