I am goin to get xperia X10 today under AT & T 2 yr contract. My old phone is sony w518a. I am so impressed with the music quality, so i went for sony again. But now i have seen so many negative comments on that phone. I am so confused now. Should i exchange it for samsung captivate? My first priority is music but iam gonna use it for browsing, installing various apps and games too. I heard samsung captivate is up to date but some are saying it is not stable. So please suggest something, should I keep my xperia or should i go and xchange for captivate?