I asked a similar question here a little while back (6 weeks maybe) and ended up buying the Dell Axim X50v. I had no problems moving from Palm to PocketPC. For some great information, reviews and comments on all things portable (Palm and PPC), have a browse through
http://www.brighthand.com/ . And for everything you ever wanted to know about Dell Axim's (and a lot you never even thought you didn't know), have a look at
http://www.aximsite.com .