Id say this is the best in class phone, especially with a 3.2 MP cam and with all essential features required in a phone. The only difficulty in the phones design is the volume up & down buttons on the side of the phone which is too minute for a normal hand.
Sound output from phones speaker isnt that great and is a big disappointment when compared to N73 music edition, but remember this is a cam phone and not a music edition phone, but once you plug earphones, then you are out of the world, the quality is so amazing while earphones are on.
Ive compared the phones pics when taken in night mode with all major nokia models and none of the nokia phones can match with k810i. this is as good as an exclusive digi cam. can expect some improvement on sound reception for calls. All in all a great phone and a must have for photography freaks if you are not looking at k850i.