Stock price when the opinion was issued
Gold is becoming a crowded trade. Silver represents a more compelling opportunity. Currency-hedged access to physical silver in Canadian dollars. No foreign exchange risk. Silver just topped $35, a technical breakout; hasn't been there in over a decade. Industrial demand for silver. Mining supply for silver is pretty tight. Low correlation with stocks and bonds, so it helps lower portfolio risk. Bit of a hedge against an uncertain USD.
Gold/silver price right now is 90:1. Average over 50 years is 60:1. So silver is at a valuation discount right now. After the 2008 financial crisis, the gold/silver ratio was 80:1, and silver quadrupled after it hit that ratio.
SLV is the version to use if you have US dollars to spend.
No problem with it at all. Silver's less pricey than gold. If you want to be in that market, a perfectly good way to play it. Less risky than many of the mining companies.