Where does this misconception of QSS come from?
You don't buy a QSS for MR, i'm confused as to why everyone thinks you only get QSS against a AP champ with CC.
You buy QSS to negate a powerful ability, I'm tired of everyone thinking that QSS makes your build less optimal or that getting it against a zed, warwick etc is a terrible and annoying choice because it makes you waste like 1350 gold.
Also you don't need to assume that you should get QSS as your first or second item, you can get it at any point but it's recommended during the mid game because that is where most teamfights happen.