A few weeks ago I wrote a summary of my Palm to iPhone conversion.
Time for an update.
This is really a Geek Odyssey, though, as I mentioned before, Missing Sync for iPhone would probably help.
I won't repeat all the extensive links in my earlier post, please go there to get the details. I've even updated that older post with a link to today's Appigo Notebook/ToodleDo migration.
You can see the current state my "iPhone as PDA' above. Those bottom four links should look familiar. They're a close match to the classic four iPhone buttons: Calendar/Date Book, Contacts/Address Book, Tasks/Todo and Memo/Note.
On my Palm I'd substituted a 'digital ink' app for the Note, I used that to scrawl quick notes. On my iPhone the equivalent is Jott. It captures audio snippets which are then transcribed. In some ways better than being able to scrawl an "ink" note, in other ways not as good.
The Calendar and Contacts are Apple apps. They sync with OS X iCal and Address Book. I wish instead they would sync directly with Google Calendar and Contacts. For now I sync my desktop data to Google using Spanning Sync.
Appigo makes both Todo.app and Notebook.app (to the right above the main four). Both sync with Toodledo. I wish Google would buy Toodledo and take that over too. The Appigo products are great. Toodledo tasks are spartan but good enough, Toodledo Notes need a lot of work.
The rest of my primary screen consists only of apps I use ALL the time (oops! Looks like Maps got bumped off. It should be there). Other screens are split info games (a real strength of the iPhone), lesser used apps, etc.
The Appigo apps make the iPhone a better competitor to the 1994 Palm III, but in terms of usability and PDA value the Palm III is still a clear winner. The iPhone is only competitive when you start to do geeky and barely possible things with Google Calendar and the like. Of course the iPhone can do far more things than the Palm III could, not the least of which are Safari, Mail.app and Map.
One more thing. The Palm III had global search. So you could search tasks, notes, address book, etc with one tap. Slow, but global. There's nothing like that for the iPhone. Appigo Task and Note search is very fast but limited to those apps. Calendar has NO search, and Contacts has a feeble search against name alone.