It has taken over a month using Circa and Rollabind notebooks, but I've stumbled across a feature that Levenger Circa and Rollabind notebooks provide that I find truly powerful. In the past, I've tried to keep everything in my planner. This includes calendar, contacts, todo lists, ideas, notes on books, meeting notes and any other little bit of information I write in my planner.
If I keep all that stuff in my planner, it quickly becomes a pretty full planner. So what to do? I would take all the old pages out and put them in a yearly archival binder. I don't believe I've ever lost an idea, but I don't believe I've ever went back to do anything with an idea I wrote down over a month ago.
Enter the Circa notebooks... I have a section for Creative writings, a section for notes on books I've read along with books I want to read.
Once I'm running low on room in my planner, I can take these pages out and put it in my "Creative" notebook. And if I have enough ideas or notes about books, I could put those each in their own notebook. The whole system grows organically and I can assign individual notebook(s) to a topic. This doesn't require a bunch of bulky binders, just a few rings and notebook covers.