I had the iPhone for about 2 years (6 of them, actually). It's a great entertainment device, but it's hard to write more than very simple, short texts. Tweets (even at 140 characters) are more cumbersome. It didn't allow MMS texting, so if someone sent me a picture or video, I had to view it through an external link on a PC or Mac. I heard they're coming out with a more business-friendly iPhone, but who knows when?
The greatest feature of the iPhone is Apple's incredible customer support. All 5 of my previous iPhone's had one glitch or another (only one of them was my own doing...hint: never text while riding a motorcycle), and Apple willingly and without typical customer-service-attitude, replaced them all. I can't say enough about their excellent customer relations and their amazing systems!
As for the BB, it's been tough to transition. Everything is so different. But I can already tell how much more powerful it is. The keyboard is more convenient. The PDF, Word and Excel viewers are great (I haven't tried to edit using those yet). I can make calls while I'm on WiFi viewing docs. The 3G speed of the BB Bold is pretty good, and I paid for the "tether" option, which means I can use the phone as a wireless modem when I'm on the road.
I just think for business, the BB is superior, more powerful and more convenient. But it's also uglier (in my opinion) and a lot bigger. I guess practicality won out in the end.
Jason,
Nice to see you back. I have a black berry storm that I love but it's a bit clunky sometimes transitioning from application to application. Whether or not being plugged in all the time is a good thing I don't know but I can almost manage without my laptop for some time with it.