Which phone should I pick?

I own a Blackberry Curve and I love it. It has a decent camera, not as good as an iPhones, but decent. You can download all kinds of applications like Facebook, Myspace,Twitterberry, the list goes on. Blackberries also run on their own internet service, so they're different than the other phones internets. You also get BB Messenger with every BB, so if you know anyone else with a BB you can im. The processing speed is fast, lots of memory and I heard that Sprint has just released their newest upgrade to the OS (Operating System on the phone). It can be used as a mp3 player.