I upgraded twice. Once from a used Palm IIIxe to the Palm Z22, and then to the Kindle Keyboard 3G.
I can't quite remember why I went to the Palm Z22. The screen is smaller than the IIIxe, although I did get more memory, a faster processor, a genealogy app, and a rebate
The Kindle Keyboard's free near-worldwide text-based web coverage would be hard for me to give up voluntarily, at least so long as
www.readingthenet.com remains live.