The problem with all the binders is curvature of the bottom of the pages over time, unless you have the binders completely stuffed, either with pages or some sort of extra packing.
I prefer the Itoya profolios (for small items like cards in pages, or, if using the small sized profolios, for individual cards or postcards) is no curving.
And for large items like "giant Police Gazette premiums" and even more giant Baseball Magazine m113 posters, or even more more giant newspaper pages, there is pretty much a size for everything.
Doug
|