What I like about the Horngren Series is the practicality of it. This series still manages to usually hold the number of pages down to about 100 less than its quite excellent major competitors (Weygandt-Kieso-Kimmel, Wild-Larson-Chiappetta, and Stickey-Weil-Schipper-Francis). It's still a large-dimension hardcover and this Horngren book has 840 pages. That's plenty of space for one course, and Horngren provides more than enough easy-access online materials as well.
Horngren is mainly used by university students although Weygandt-Kieso-Kimmel have gained market share. But Horngren also recognizes that most financial accountants do not need an accounting degree. They need to understand accounting and know how to do their specific jobs. In fact, I've long noticed the small ratio of accountants working in accounting departments that actually have accounting degrees. For them, the Horngren Series is well-designed. But it still serves the needs of college students.
Horngren places emphasis on the accounting cycle. In doing so, this textbook covers the actual job duties within an accounting department quite efficiently. That's why I also purchase Horngren Series books. I purchase them for staff as well as additional resource material to help me prepare when I teach accounting courses at the university level. Because if its special niche and top-notch editing, I would expect this series to last through many more editions.