I find this great guide to all things BlackBerry:

The Power User’s BlackBerry Guide: 121 CrackBerry Tips, Hacks and Resources
from the editors of Inside CRM of all people

Why the time is right to move to an iPhone? It has nothing to do with the fact that the iPhone is now available with 16GB of storage. While more storage is always nice, I was holding out for the 3G version on AT&T’s network. But now that the iPhone developers kit is about to ship there’s a wave of innovation coming in new mobile applications being developed exclusively for the iPhone.