I am also due for an upgrade to my cell phone very soon, and I am seriously considering getting a Smart Phone. I love my phone; I talk on it a lot, and I do some texting. The beauty of the Smart Phone, for me, is the organizational aspect. Although I am leery of using WiFi in public places, the convenience of having something like an iPhone on which I could check my online calendar (including my work calendar) and have everything in one place is enticing. It's as small as a notebook, and could fit in my pocket as I go about my day's work as well, so I could always have my reminders with me.
For me, the temptation would be staying away from all the fun things that come with or can be downloaded onto said iPhone. Hmmm. What to do ...?
On a side note, check out some of these really cool iPhone covers on iPhone 4 Covers Blog .
Out of Print?