I've been reading all the articles and blog posts about the iPhone and it does look cool. But, it's not for me. I can't get Cingular reception at my house. I had cell phone service with the company that is now AT&T for years, and got great reception everywhere but my own home. I kept waiting and waiting for them to put up a tower near me, but it never happened.
So I switched to Sprint and I get service everywhere. I've also signed up for their Phone-As-Modem plan and that works great, too.
I'm currently using a Samsung MM-A920 for wireless and an HP iPaq rx3715 for a PDA. When one of them dies, I'll be switching to the Mogul by HTC. It does everything that my current phone and PDA do, and can also connect to the internet using the Phone-As-Modem feature.