If I may answer as well The ETF’s that u have to be careful with are the multiple ones, the 2 or 3 times leverage, due to gap openings, as they re-balance the ETF o/n, so if there are gap openings, u don’t get all the Gap and over time that will mean not getting all the move…ie. stock/metal goes up $ 100 on a 3 * u shud get $300 lots of gaps could mean $ 270 etc. Plus all ETF’s have costs, that eat performance to a degree.
On mining ETF’s I am useing the Sprott ones, as I trust them to have what is on the “box”, they are not the most liquid, but that is less a worry than finding out that they only have paper promises etc plus if there is a total meltdown many of the other issuers may not exist, I think Sprott has a much better chance. …also they pay the dividends out annually if there are any.