Now i have tried to compare some of the smartphone SE has brought on the market. take a look here
From what o have seen P1 is an upgrade to the camera and to the music functions of the P990i. If you`re using the phone as a businessperson, what sould you need all those improvements for???
If it was up to me, i`d go for a m600 :) with wlan :D. (sadly, it doues not exist such a phone (well except for the P990i ))