I've had my pre-ordered Verizon iPhone for 3 days now, and I love the thing.
My good friend, [Sterling Zumbrunn](http://sterlingz.net/), helped me with initial app suggestions -- super helpful because he has pretty much tried every app in the app store :).
Things have changed quite a bit since I was last on iPhone (in the AT&T dark ages), and the infrastructure and app ecosystem are really mature now. One big difference for me is that many apps now support [DropBox]( https://www.dropbox.com/referrals/NTY3ODc2OQ), which means that all of my devices are always in sync.[^1]
[^1]: The notable exception is [OmniFocus](http://www.omnigroup.com/products/omnifocus/), whose iOS clients do not support DropBox even though their Mac desktop client does.
For note taking and text editing, the combination of [Elements](http://www.secondgearsoftware.com/elements/) on the iPhone and [nvALT](http://brettterpstra.com/code/notational-velocity-alt/) (a Notational Velocity fork) on Mac OS X is convenient and versatile. Since I don't like UI clutter, I also have [PlainText](http://www.hogbaysoftware.com/products/plaintext), which is cleaner but less powerful than Elements. All three are pointed at the same DropBox folder, so the content is seamlessly shared, and all three support [TextExpander](http://smilesoftware.com/TextExpander/). I'm finding that this combination works well for both jotting down notes and composing and previewing longer articles (in Markdown). If you don't already use Markdown and are a frequent web content creator, you [really need to check it out](http://daringfireball.net/projects/markdown/).
Other apps that are indispensable for desktop / mobile device harmony are [PasteBot](http://tapbots.com/software/pastebot/), an app that lets you easily push clipboard content to and from your Mac, and [DropCopy](http://10base-t.com/macintosh-software/dropcopy), which lets you easily send files and images to any other device currently running DropCopy.
For mobile WiFi, I retired my MiFi 2200 and am now paying $20/month for 2GB of wireless hotspot service (instead of $65). I rarely use over 2GB a month, and at $10/GB for excess data, it is a much better deal even if I do go over.
Other apps I use daily are Istapaper, Kindle, GoodReader, TextExpander, 1Password, Evernote, 42s, Twitter, Facebook, and Google.
Pam got her pre-ordered Verizon iPhone at the same time. I backed up her old AT&T iPhone 3Gs, restored the backup to her new Verizon iPhone 4, and she is happily using it exactly the same way she used to. The one big change? I can actually call her and talk for more than 20 seconds!
I do miss the physical keyboard on my old Blackberry Bold 9650, and I miss Blackberry Messenger. Blackberry is still the king of messaging, but since messaging is only 10% of what I actually want to do with a mobile device, an iPhone or Android makes much more sense. When I travel internationally, I will likely swap my line over to the Blackberry so I can take advantage of the unlimited global data plan. [As I noted before](/journal/2011/01/29/why-blackberry-is-the-only-viable-international-phone-for-usa-residents/), I believe the Blackberry has the only viable international plan for those of us living in the States.