The first notebook is a police report style notebook. It offers a template to keep your facts organized, and it is not too small and not too big. That type of notebook would be my first choice most likely in a situation.
The second notebook is a basic mini notebook. Most officers I know choose this one because it is so small and easy to carry with you. Currently, I carry this on my uniform because it has the right set up and space to record the facts you need.
The third notebook is a larger journal style notebook. I do not like this one because it is too big. I can only see myself using this notebook if I had to design a crime scene or was using it for a big major investigation.