Regarding the new AD Carry itemization implemented for Season 6, we have some new options. I try to main the ADC role, but I feel like itemization just got a little more confusing. (it felt fairly simple before, most ADC's all bought the same items).
So the question is, when (or on which champions) is it a good idea to pick Rapid Firecannon over Statikk Shyv or Phantom Dancer?
They all grant some sort of bonus to attack speed, movement, and critical strike. Riot says RF is better for "sieging", but I mean, we all siege.