Lived on Missionary Ridge (South Crest) for about 18 months (recently moved).
Pros:
1. Incredible views of Chattanooga - can see the all the firework shows during the 4th from your front lawn
2. Nice neighborhood, lovely homes, excellent neighbors
3. Generally quiet
4. Quick drive to the downtown area; accessible to all areas of Chattanooga
5. Lots of fascinating civil war history on/near your front lawn
Cons:
1. Very windy at times - well, you're on a mountain
2. Awful public schools
3. Unsafe for young kids to ride bikes or even walk - narrow sidewalks, speeding cars, winding roads
4. Close to "sketchy" neighborhoods (as you go lower in elevation; although Shepherd Hills is very good)
5. Long drive to Publix
(Agree with above) If I had kids, and couldn't afford private schools, I would not buy.