I am using k700 I model for the last 4-5 months, overall phone is really good, but not so solid as nokia models and only meant for very delicated users. The only problem I see is Network problem at the same place nokia shows full strength but my k700i shows only 2-3 bars.
other features are good lke mp3 player is really good. colours are really watchable and bluetooth is really amazing.
Online support is also very good. overall I think product is good but sony should look into network parameters also as the same problem I also heard from other sony users.
last week it hang up and showed me sos calls only for the continues 2-3 days after getting it repaired from service center it is working fine only lost network completely 1-2 hours in a day.
waiting for comments of other users.
Yogender Panwar