[link|http://forum.nokia.com/devices/E60|E60 is a S60 series cellphone ] running Symbian 9.1, Nokia 770 is a tablet running a form of Linux, so it's likely the USB transfer problems don't apply. Besides, the 770 has WiFi.
If the 770 battery life were better (6-8 hours instead of 3) and the price the same (about $350), I'd get one myself.
--Tony