I've used Samsung,LG and now SonyEricsson. My satisfaction with a phone depends upon not having any one single function or use, to do with the phone, that isn't a constant hassle or worse a impossibility. For example, navigation software thats not user-friendly/intuitive. Or not being able to move camera pics to a PC. For my level of use with the phone - call related capabilities and quality are paramount - this phone has no glaring deficiency, as yet discovered by me. I've in fact started listening to music, moving mp3/photos around just becos it does them well.I believe, from reading reviews below, and noticing on my piece that a few handy buttons automatically take you to Cingular's 'money-making' schemes, as well as its 128mb MS card, that the biggest drawback is the Cingular induced limitations. I hope to get rid of these someday.The phone itself is feature rich - really takes a while to figure everything out. Mostly the software is user-friendly. The quality of the music player as well as of the phone is good. The speaker phone is loud enough to be heard while driving on a freeway. The voice recorder is a neat handy tool. I have not used the video capability yet, but the camera picture quality is good.If I have a gripe, its that I can't reset the shortcut for the central key on the dial pad. Predictably, its goes to Cingular stuff that I never use. And another, that I can't have my screensaver show up for more than a couple of seconds (because the phone enters into standy mode, which I can't seem to control). I really wish there was a way to make the phone screen stay lit - with the screensaver on - atleast while it was being charged.In conclusion, I've used cell phones since '98 and this is the overall the best phone so far. Highly recommended. Cingular service, and their money-grabbing branding, well, just as good or as bad as the rest.