I discovered Merlin Mann’s hPDA concept around the same time I discovered the Rollabind disc binding system, and for me the benefits of combining them were immediately self-evident. I hacked my first “field-strength” ring-bound hPDA using covers from an old poly folder, a strap made from an elastic hair band, and three small Rollabind rings; it proved to be rugged, reliable, and indispensable.
The only problem I had was that the thin covers allowed the rings to torque sideways when stored in my back pants pocket, flexing the covers and the cards at their weak hole joints. So when Levenger introduced its CircaPDA this past summer — using the same extra-thick clear poly covers as their other Circa notebooks — I quickly retired my original covers and have been proudly packin’ Circa ever since.
Quality-wise, it was like moving up from a kit car to a Lexus. But regardless of the bodywork, it’s what’s under the hood that ultimately counts. Here’s what’s under mine: