Hi, Janine. I'm really surprised that you never got a reply on this! I don't think that I'm the best person to respond (seeing as I'm not really
in business yet, but I can try. Last week I kind of swapped phones with my husband (he took my Blackberry Pearl and gave me the iPhone he'd gotten for work but found too bulky to carry), and I've been playing with the iPhone ever since.
The interface is fantastic! It's super easy to use, and although the touch-pad keyboard takes some getting used to, that's pretty quick. As for applications, there are TONS of them out there, many of them free or really cheap. It can quickly become an addiction.
Email on it seems to be really good. I have both of my personal Yahoo and Gmail accounts going to it at this point. The Yahoo mail arrives on my phone faster than it appears on my PC - it's "push" so it's pretty much instantaneous. The Gmail is NOT push, and the phone will only go out and check for it once every 15 minutes. Kind of a pain, but not horrible. (Interestingly, it's the opposite of what I had on the BB, where the Gmail was push, but not Yahoo.) What I miss from my BB is having an LCD/visible notification when you have mail that you'd see when the phone is "asleep." I am actually searching around for information on that now.
Syncing with Outlook was seamless and a breeze.
The web browser is nice - much nicer than the BB's - and it's cool that when you hold the phone horizontally instead of vertically the view changes.
The only thing that seems to be glaringly missing is voice dialing. Odd... And one other thing to know is that, unlike other "smart phones," non-Apple native programs/apps cannot run in the background on the iPhone. What that means is that once you return to the home screen, the program closes. So each time you run your Twitter application, it asks for your login information and has to load from scratch. Also, if you load a different calendar application or PIM, I don't think alarms will go off if the program isn't actively running.
So again, I'm not using it for business yet, but once I get everything off the ground I will be, and I think it will be just fine. If you have any other specific questions about it, I'd be more than happy to answer them.
--Samantha