i bought myself a new W850i. Its my first sony ericsson handphone. I like the beautiful white outfit of it which makes it classy. I would say this phone is overall quite not bad for me. Here are some of the advantages and disadvantages i faced...
Advantages:
Nice camera resolution
Big screen!! (i have always like big screen phones)
Easy-organizable files
Can use video as contact ringtone
Walkman function
Audio quality good and LOUD!! =)
It doesn't have a joysticks (joysticks are always non-durable)
Charging takes only a little while (i dono why..)
I also particularly like the "mark" function where i can mark several or all files when doing transferring or deleting. This function is not available in samsungs i know...
Disadvantages:
Lagging (its a little bit lagging compared to samsungs... probably samsungs have less complicated functions)
Keypads are a little bit difficult to press
I couldnt comment on its 3G functions since my country hasnt really fully-developed this technology... its coming though...
Overall, a good phone... recommendable considering also its price!!