I had a w810i (my daughter took it from me) - good music player, decent camera.

Then I got a W760i, which I liked a lot. Sony Walkman player, very good still & video camera. Lots of build in function, GPS, large display. But I lost the phone on a trip to Vegas.

Now I have a W580i loan to me by a friend. I don't think it's as good as the W760i. The camera is 2 meg vs 3 meg, no GPS. But it is a OK phone.

I plan to buy the K850 which has a real Cyber-Shot camera. (The W series has cameras which has fixed focus not auto focus).