I use a PDA too, but still love the written form, since I don't lose my data and can see everything in a glance (or two). Because of this, I modified the hipster PDA into what I'd call a "Circa PDA" using Levenger discs and some plastic cover material. I punch my own cards for it, which works well, and use the DIYPlanner.com forms for the 3x5 cards.
You can see the final results of what I did at http://www2.flickr.com/photos/shotwe...7594206263782/
I have found it to be extremely useful and very effective as well... You don't have to shuffle cards, just pop them in and out, and yet the binding system holds the cards nicely and it looks good enough to take into a board room to boot. I also keep a couple of blank versions of this in my office, my car, and on the nightstand to jot down notes, which later get emptied into the main CircaPDA.
Hope you find this useful. Let me know if you have questions on either how I use the CircaPDA or how I built one.