My one criteria: I've had very bad experiences with flip phones. So I want a non-flip. Also I'm not really interested in using the web, a camera-phone, any of that stuff. I just a nice phone with a color screen, good reception, and the ability to download cool ringtones of my favorite songs. It seems like my top 2 options are the Nokia 3589i and the Kyocera KX-414.
I live and work in New York City and will be using the phone almost exclusively in Lower Manhattan, and also North and Central Jersey.