Is a 9-inch laminator enough, or do I need a 13-inch?

Reviewers across r/Teachers and r/homeschool say 9-inch handles letter, legal, photos, recipe cards and most flashcards, which is what most home and classroom users actually laminate. A 13-inch (tabloid/A3) machine is worth the upgrade if you regularly laminate 11x17 posters, anchor charts, or two-page spreads, otherwise the extra width is wasted.