I use the palm 3x. with 8meg card. Love it! 3-4 years old now! may have to replace it soon with ? Starting to fail me. Don't know yet if prob is software conflicts or not. Probably not because tapping squeezing case sometimes removes the prob
I have many many books, hacks, and other software. Use DateBook 4, Jot, never used grafitti, tealphone, backup buddy, databases, time trackers. Don't see the need for color yet, but I have to play with some of the newer ones to see.
It's important to get a good stylus. The ones that came with palm scratched the screen.
I like the idea of Handsprings cards especially the GPS mentioned above.