There is still gobs of room on my Calibre Hard drive (I have a USB cased 2.5" drive reserved for Calibre Portable)
I have about 8 books
going. I read what I am currently in the mood for. My PEz helps with this by having a 'Recently Read' list (last 32 books opened) and ADE remembers the place (block) I closed the book at

So I am with the
never enough book crowd