The Symbian OS are indeed slower..
For N80, ppl get it so can take nice photos.. 3Mpix camera with
Carl Zeiss Lens..
have Wi-Fi can connect to home PC.
have Bluetooth, and there are alot of GPS navigation software to
use with phone. like Route66 and Smart2go etc.. they can only be
installed in Symbian OS or PocketPC.
The Voice Recognition is very good, best around I would think.
Don't have to put voice tag. push a button and call out your
friend's name and it will auto dial.
It all depends on what U looking for.. just normal callings and
SMS.. don't need all that above.