I am a daily planner user. I was practially addicted to the FranklinCovey system for 10 years. Then when I was at a desk all day I like a Palm/sketchbook combo. Next I used a DayTimer calendar with 5 lined paper sections. I would have stuck with it, but they stopped producing it. Currently, my needs are met by lined notebooks small enough to fit in both my diaperbag and handbag.
I like these beautiful notebooks made by Cavallini — designed in San Francisco and produced in Italy. I like the designs and I especially like the elastic band to keep it closed — one more barrier between my toddler and my notes, plus it keeps my pen from falling out when I stash it between the pages. Available lots of places. 11 designs sold here (some on clearance!).