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Go for something different than what most others use and or cut a verse from a song that isn't commonly used. The ringtones I use in my devices are from a variety of sources. I have specific songs for certain people, my alarm is, Work Bitch by Britney Spears, and my main ringtone is the retard alert rant by Mr. Garrison from South Park. Whatever you decide on, I'm sure you will pick something you will like.