I tend to stay away from larger sizes from all countries - unless it's a particular favourite movie. Take Halloween. I have paper from Australia, USA, England, France, Sweden, Finland, Italy, Belgium and Yugoslavia.
But generally if it's bigger than A1 size, I can't easily display it so I leave it be.
So I'm basically opposite to many of you! I prefer locandinas, 1/2 sheets, Japanese B2s and daybills.