Blueray: Books Better !link!
These are often region-specific and go out of print quickly. The "book" is glued, not sewn, so pages can fall out over time.
If you were not referring to film releases, you might be interested in: blueray books better
Using a shorter-wavelength blue-violet laser allows data to be packed more densely, holding up to 50GB on a dual-layer disc compared to a DVD's 8.5GB. 2. Tactical and Collectible Value These are often region-specific and go out of print quickly