I just picked up two UTSTarcom ppc6800 for my wife and I. She love it, its very easy to use .Its running windows mobile 6 /WM6). I have Verizon, but AT&T has the same version.
The best part is it has wifi, so if you have a home wifi network you can connect and use the browser or any wifi network for that matter.
It also supports all the features the phone companies offer.
here is a link..
http://reviews.cnet.com/smartphones/...-32638455.html