99% of my collection is in hardcover format, which has decently large type that is easy on my eyes, a comfortable heft in my hands as I sit in my curved-back wi

99% of my collection is in hardcover format, which has decently large type that is easy on my eyes, a comfortable heft in my hands as I sit in my curved-back wingback, and unless damaged, has great shelf stability (the ability to sit well on a shelf without physical warping causing it to slide out all over the place). If I want portability, I have my rooted Kindle. That can fit 10,000 books into my satchel with very little complaint.