SLV is most managed by JPM ...

I suspect that they set it up for the end game. When they are trapped, they can use SLV silver to satisfy the contract and you are left with paper shares. They are not obligated to give you silver. The contract is full of holes. You may get your money back at multiple of the price you paid but silver may explore when you are waiting for your money.

I am not that sure about GLD but it seems more solid than SLV. There are too many other choices so I will not go with something I have doubt.