I used to have the Treo 180. What I liked most about it was the ability to setup dial up networking with its modem to call into our work and send/receive e-mail that way.

This was a good device overall, but I had a couple issues with Best Buy when it failed prematurely. I had paid for the 3 year warranty, but before the first year was over, Best Buy would not honor the warranty because they "no longer sell that model."