In early 2005 I got a Samsung i500, and have been generally happy with it.
Pros:
- one less gadget to carry around
- nice design (smaller than my last phone)
- lots of memory
Cons:
- Network connection is flaky
- can't load new ringtones
- lots of rough edges in the phone/pda integration (i.e. the whole screen goes white when it loses service/roams)
Some resources: http://home.triad.rr.com/rlwhitt/palm/
http://i500.nopdesign.com/
http://pdaphonehome.com/
http://www.clasohm.com/blog/one-entry?entry_id=12096