I'm having to downsize my library, since we are moving out of state. Plse help me compare and decide between Landmark, Cornerstones of Freedom and American Heritage Jr Library. I want to keep them all, but I'm not sure I can justify it. Next, I need to work through my biography series(es). Ugh! Which is your favorite & why?

1) have you found the updated editions of any particular title to be revisionist history, or how have you found them to be revised/updated? 2) are the paperback editions a reprint of a hardbound volume or have those titles not been printed before? Is it realistic for me to hold out for strictly hardbound books for our shelf or should I be grabbing the paperbacks as I see them to complete our library?