I have got this k530i almost one month back.
I love it coz of
- clarity of music(even if not of a walkman series). I just love to listen music for hrs on the speaker. 
- great ease of use 
- good quality pics 
- cute look of the phone(feminine look unlike masculine look of N73 etc.;-0) 
- there is no joystick unlike other SE mobiles:-) 
- comparitively better back up of battery. 
- bluetooth feature 
Still there are a few concerns.
- no cover of the camera lens. 
- lack of support for wi-fy or infrared remote connectivity 
- I found bluetooth incompatiblity with Nokia n70 series(may be the problem with Nokia phone) 
But I feel it  is - overall good phone- for 7700/-:-). But I feel it  is - overall good phone- for 7700/-:-). But I feel it  is - overall good phone- for 7700/-:-). But I feel it  is - overall good phone- for 7700/-:-). But I feel it  is - overall good phone- for 7700/-:-).
abi