sadly, I've migrated to using PocketPC devices (the new HP hardware is awesome, and although it isn't perfect, the PocketPC 2003 OS is pretty good...the handwriting recognition is good). I've got a T3 that I use for testing, but I find Graffiti2 to be totally unacceptable, especially after you've used real recognition (my Newton 2100 is still my favorite pda).
That being said, I still want to really like the T3. The Palm os5 is much better, and in fact the built-in calendar app has almost completely done away with my need for Agendus (
www.iambic.com). The thing about Agendus that I still find incredibly useful is that appointments are contact-centric, and it stores a history for each person...ie is you make an appointment with Joe Blow, then go to Joe Blow's contact, there is a history button that shows all appointments, todos, etc associated with him.
I haven't used AvantGo in a year or two, but it was useful.