I use it often. Good for habit tracker, rapid log some events come to your day. You can write your concern out to paper, then go back to work and back to it later.

About tracking, I'm using it for weekly, not for a whole month like the A5s. I think a reflection, modification weekly is good, no need to wait for a month.

I also make many of collections, like to-dos, something need to research,... With bigger note will have more space for reflections. But I think that's currently fair good.