To answer your question about my preference... For non-fiction books, A4 pages seem too big for me, A5 pages seem little too small to me, and B5 pages seem just

To answer your question about my preference... For non-fiction books, A4 pages seem too big for me, A5 pages seem little too small to me, and B5 pages seem just right. Again, this is just for non-fiction books. Fiction books I prefer more A5-sized. Just my own personal, subjective preference. That's all.