With a #Filofax, I can arbitrarily insert pages of different paper, designs, and sizes right next to each other. There's no #NotebookAnxiety or #SketchbookAnxiety about "messing up" a page and being stuck with it, or having to cut it out. If I "mess up", even a diary page, I can reprint a new one (when I'm printing my own diaries), or simply replace a page in 2 seconds on the fly, and no one has to know. You simply can't do that with a #TravelersNotebook, unless you rebind the booklets.