What decade do you think the best movies were made, and why? #2?

I'm looking through some movies trying to decide for myself. I think 40s, 50s, and 60s are most common near the top of my list. 20s and 30s era had good films from what I have seen, but a lot of my favorite directors (Bergman, Kurosawa, Kubrick, Tarkovskiy, Godard, Fellini) did their best films in this period.