Well, I've never watched Madmen; although it's one of the series that I may try.
Stranger Things was actually my #4, which was maybe a bit high in retrospect but it's something that my daugthers and I binge watched together.
I love it's setting both in time and location and as BH's precis says: several themes and directorial aspects were inspired primarily by the works of Steven Spielberg, John Carpenter, and Stephen King - my favourite director, another of my favoured directors and my favourite author. It uses its inspirations brilliantly and transports me back in time.