1. Light weight & 320 X 240 screen. 2. Got it as a gift (I wanted the Treo 700W, mainly for the stylus). 3. Better batt life. (4~6 hrs wont get me from coast to coast). 4. Treo 700W. 5. My Q would be great if.., batt life lasted a week, cases worked for both std and extended batts, there was a charger that could charge outside of the phone.