Thanks for all your inputs, from what I gather, for you Zaurus users, the thumbboard is a major asset in PDAs. Before I carry on, let me first clarify, those who mentioned the cost of the machine have a very valid point: I personally see PDA\'s should have a price range of a few hundred dollars, while something as powerful as the Zaurus is nearer to lower-end laptop prices (half a grand and up), whereas laptops are usually over a thousand dollars.
So there definitely is a difference in \"bang for your buck\" between something like the U70 and the C7/860.. and depending on how much one is prepared to spend, we purchase devices from one or more of those groups. Am I wrong in guessing most of you would have something like a Zaurus+laptop ?
For my personal usage habits, I can easily write significant amounts of emails with a stylus, which I do nowadays, but the problem is that any PDA or Zaurus or non-laptop device will not be able to run specific software that I may need (e.g. Scientific Workplace, Latex -may be possible on Zaurus?-, IDL programming language, etc...). Of course, most people use Word/Excel, and there are \'compatible\' devices, but absolutely no software to help me write a scientific article with greek letters and horrendous equations.. which is why I suddenly find something like the U70 quite attractive: a PDA+laptop (standard price combo), or a Zaurus+laptop (expensive combo), or UPC on its own (medium price).
I do wish all the software I used ran on the Zaurus, there all this would be a moot point...
Thanks all.
--sett