Firstly, its a true phone for either sex packed with the best technologies in the market today with exception to wifi, UPnP (So as again anything which lacks something is not perfect. So its not a perfect phone for those who need wifi for faster data transfers, others go ahead its just the right phone for the day)
Features:
1.Size : smallest smart phone from nokia till date and weighs 90gms (u can put it anywhere in pockets)
SE is a quite negligibly bigger phone
2.Best features include the Camera (3.2Mp. auto focus, but flash is LED which is weak compared to the SE 790i, and pictures in SE are best ), Radio with Visuals( Hutch will start the visual radio shortly in bangalore), Mp3 is great if not the best and then its a symbian phone so lots and lots os application available for u (SE lacks symbian OS), 3g is not supported in SE
Ease of Use: I felt nokia as I was more accostomed to it and if ur a SE user u will find it easier so np issues Both are user friendly
Looks: Even though I has N73, I feel K790 looks best in black
Screen and build: Nokia screen is best and the back lens cover is bit loose after 2 months of use, so be soft to the cover
Finally the price : Both are equally priced, I took N73 coz I change the phone every now and then and nokias have bettter resale in market
So both are the best in the market u can choose on ur choice but if want 3G and u want better service and lots of tweakability go for nokia else if ur a die hard SE fan want a good camera phone go for SE
else Nokia anytime because othere than a small downside in camera comp to SE rest features are great and more