National Hills is very convenient to shopping, dinning, interstate, downtown, schools, etc. Personally, I believe National Hills is a good, established neighborhood.....you should ride around & check it out to make sure it works for your needs.
The residents range from college students to retirees. Should you decide to purchase in National Hills, you can make tax-free money by renting for the annual Masters Tournament...if you're an owner-occupant, etc.
Hope this helps. Let me know if you have any other questions.