The iPhone is old hat now, plenty better phones out now and some corkers to be released soon.....
Check out the Google nexus one, made by HTC for google, awsosme phone, you buy it direct from google and its not tied to any network so is unlocked, sat nav uses google map street photos instead of the usual tomtom type graphics and you dont have to type your location in, you just say it, even if your wrong it works out what you meant
Or theres its rival, again made by HTC but this time just for themselves, its called the Bravo, or desire in the US, similar to the nexus one
Or again the HTC HD2, check this one out if you like massive screens, biggest screen out there i think, uses WinMo 6.5 but most people prefer the android OS of the other 2