I'm a big fan of Sony Ericsson's bar shaped phones as they are always cool looking and totally different than what other companies offer, and the k550i is no exception. Owner of a w810i, the k550i is very similiar in features and size, but weighs less and is thinner, so if you ever wished the w810i was lighter, this is the phone for you. I think the biggest possible issue with this phone is probably the keypad, and to be honest, isn't as bad as one may think. Yes they are thin, but they are raised a bit and are easy to press with very tactile response. If you don't have issues with the w810i keypad or similiar phones with small keypads, the k550i shouldn't be a problem. Otherwise, call clarity and loudness is very good, and the speakerphone is equally as loud, though I wish it was on the side of the phone rather than the bottom. The phone's UI is similiar to that of the k790/k800, and it's pretty quick, no menu lag that I have experienced. The camera is the same as the w810i, 2mp w/ a sliding lens cover that comes in handy. One new feature that I like is the fact that I can set up to 5 different alarms, rather than just one. Overall I'm very pleased, it took me a while to find a perfect phone, and the w810i was pretty much it, just that the k550i is that aswell plus a little more. Good job Sony Ericsson!