Moving to Tennessee??? (where to?)?

Me and my sister (ages 18 and 20) are moving hours away from home. Which county/city in Tn are the most safe, easiest to live in, most fun and with good apartments to rent. We want a normal and fun and SAFE place. Goodlettsville, Hendersonville, Mount Juliet, La Vergne or Franklin? (we want close to Nashville) If you have any information on any of these plaes please let us know!? thanks!:)