nilchak:

Sounds like your Zaurus is doing a good job there. It is nice and small, so it probably fits nicely into your luggage, and it is sturdy, so it will probably keep doing a good job into the future.

The tablets are also small and sturdy, and for almost all of the use cases listed here, I would recommend using a tablet (or Zaurus) to do those jobs. You don't need a fast processor or telephony capabilities to connect to Cisco networking gear, or to download files from a USB key. You don't need a laptop either.