Motorola A630 Phone (T-Mobile)
A630 Rocks
I use the A630 for text messaging, and there isn't a cell phone on the market that is easier to use.  You open the phone up and type the message just like you would on a keyboard.  I have a friend that types on her A630 using her fore-fingers, and I use my thumbs.  I can crank out notes left and right.  The Bluetooth on it is cool too, I have a headset that makes talking quite easy, particularly when running between classes.  Finally, this device is a social MAGNET.  You carry it and everyone wants to check it out!