After reading the reviews and the forum posts, I'm more confused than ever. I think I've narrowed my choices to the T3, the iPAQ 4150 and the Axim X30. Each seems to have strong and weak points. Honestly I don't know how much I really need Bluetooth or WiFi (or even how much I understand of them), and mostly need good tool for keeping contacts, to do, calendar, etc. Will be synching to a Mac, so if one of those is stronger in that area I may need to lean that way. I have previous Palm software on my Mac, although ideally I will sync with Microsoft Entourage. Any ideas would be most helpful.
The Tungsten T3 comes with syncing software for the Mac. If you want to sync the PPCs to Mac, check out either Pocket Mac or Missing Sync.
All PDAs have PIM apps (contacts, calendar, task or to-do, memor) and the basic office apps. And all the units you are looking at have software to sync with MS Outlook. If you are looking for additional syncing options, check out Intellisync: http://www.intellisync.com/