The reasons are:
- postbound albums "grow" with time, as you put more pages in them, and the process of increasing their depth is very easy.
- they are not bulky (from day one) like D-rings.
- D-ring albums seem a lot like office binders (prettier of course), while the postbounds absolutelly not.
- the pages are really firm and steady in a postbound and the presentation is much better.
These are my reasons for choosing postbound albums.
Finally, a small description about increasing the depth of a postbound album:
- Unscrew and remove the screws.
- Remove the back cover.
- Take the metalic expansions (in American Crafts albums they are hidden in the inside of the spine) and screw them on top of the existing ones.
- Replace the back cover and screw the screws.