PDA's, who uses them, are they worth it?

[Bob Hawke]

I am curious about PDA, or Personal Device Assistants, you know, Palm V, Handspring Visor, Psion etc.

Would like to hear from people who use them. Do you find them useful, productive, what is your best choice, why?? Any information would be good.

I personally am impressed with the new Handspring visor edge, but I see other brands are coming onto the market with more and more features. Lets hear what you have to say.