I am looking to purchase my first smartphone, a Droid 2. I am trying to choose between used phones from two reputable sellers. Since I am a newcomer to using the Android system, would it be better to purchase the phone that has been rooted or not been rooted? I don't know whether there would be a steeper learning curve with a rooted phone and greater ease of use with a non-rooted phone. My cell phone plan also has very limited data. Would I be able to manage the data usage adequately on a phone that has not been rooted?