My wife has a Handspring Visor Edge, which received one of the highest reccomendations from zdnet.com's editors. It is B & W which suits her fine, she didn't feel she needed color since they are more expensive, heavier, & run through batteries faster but .

She used to carry a big 3" thick Dayplanner everywhere she went & her PDA has since replaced it.
Regards
Bill R-4581