I've lived in quite a few different states due to growing up a military brat, and have enjoyed my time in TN over any other state. Also have lived in all 3 parts of the state but don't have a favorite. I've loved all three. Spent 4 years in Knoxville while going to UT, 2 years in Murfreesboro during grad school and have been in Memphis now for a little over 2 years.
Don't really have a favorite, I've thoroughly enjoyed living in all 3 Grand Divisions.