Best IPhone compeditor?

yeah… the primary focus would be to do what the iPhone does (web/email/im/pictures/ect)… without going with at&t

OS really doesn’t matter so much, long as it works. 3rd party apps would be nice

edit: Joe… when at&t was cingular, I has some MAJOR issues with them. After hearing about the automatic roaming (aka, no matter what… if your roaming… you can get charged for it without even making a call) I decided against it.

I’d be bent out of shape if I got a 300+ bill in the mail