Another (former) diehard Palm OS (Centro) User
I have more current mobile devices for work but still love what PalmOS can do for me. You have to be a PalmOS PIM user to know why some of us lament what's missing in current devices. Alas, that demographic is too small and apparently, not enough to keep the company viable.
I've tried different OS and am currently loving my Palm Pixi on Sprint. I actually have the EVO and Blackberry Style on Sprint also (for work) but all my GTD (life) is on Pixi.
I can appreciate the awesomeness of EVO and Style but they just did not meet my need. I'm also a tinkerer at heart and WebOS Homebrew apps allow me to turn Pixi into a phone that's pretty much tailored to my needs.
Here's what I have so far, not sure if it would work in your situation:
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Toodledoo and
Done! handle my NAs, lists, etc... benefits of cloud syncing but still have a local copy on my Pixi (not reliable on internet). I paid the annual subscription fee for Toodledoo and use the subtask feature to help manage projects. If I find it not useful, I can always drop the upgrade next year. So far though, the subtask is helping a lot.
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Simplenote and
Noted! to manage my notes (memos). I was able to easily import my 1000+ memos from a decade of Palm use into Simplenote and sync to Noted!. Can access Noted! on Pixi without web access (that's key for me. I do not want to rely on the clouds for everything).
Toodledoo has notebooks (but are not sync-able to Pixi yet) that I can use to hold my project support materials. I'm still deciding to do that vs. keeping the support material in the notes section of the tasks.
References that are to be kept around for a while, I keep in Simplenote/Noted! -- paranoid that I would delete them along with the tasks if I can leave them in the task's notes.
For the hard landscape, I use the native Calendar with Ubercalendar app. Have all the stuff available in my Google calendar also.
Now, probably THE most important feature that makes my Pixi my go-to device over the fancy EVO and Style is the ease and quickness of capturing.
I installed Command Line and Universal Search Command Line for Memos patches that allow me to enter notes, tasks, appointments directly into the appropriate apps without having to access the apps themselves. Waiting for the app to launch may only take 2-3 seconds but coming from Palm days where I can jot things down after pushing a hard button, that ruined the flow of things for me.
Now, I can unlock my Pixi (if it was off) and type (without having to go to any app):
.qt get cat litter (then press enter)
and that's it. "get cat litter" gets added to my Tasks. Now, since I use Done! for my GTD, I have to later transfer that NA into Done! (or Toodledoo) if I want it to be in my GTD system. I treat this as another Inbox.
Of course, I can add "get cat litter" directly into Done! by going to that app, etc... but I prefer the quicker Command Line.
I can do similarly with memos (.qm) or appointments (.qe). With appointments, I can type:
.qe Dinner 6p-8p 11/26 at Mom
and have that Dinner added to my calendar, blocking off 6pm-8pm. I can do any edit for details later if I want.
Anyway, there are many little features that make Pixi (and I assume Pre) so workable for my GTD. I guess one may find similar features in Androids and Blackberries but after playing with EVO and Style, I just was not attracted enough to them to spend the time "hacking" them. AND you can't beat the size and form factor of Pixi!
Multitasking on WebOS is amazing but if you like widgets, Androids would be for you. I don't need widgets. Everything written above is what keeps my GTD set-up together and whichever device can do that wins my vote. So EVO and Style stay at work for my co-workers to use. Pixi is with me most of the time.
To OP, Blackberry latest OS 6.0 on Style has a great web browser -- a lot better than earlier BB browser. I was able to access medical sites (that use odd frames and flash) with Style that I couldn't with EVO or Pixi.
I am a diehard PalmOS user but I must say WebOS is working out more than alright for me.