Pretty much anywhere in Southern, CA that is below 2000 ft elevation everything is this range is zone 9a to zone 10b. If you don't mind hot most places of Southern, AZ below 2000 ft elevation all ranging from zone 8b to 10a. Central to South FL all zone 9a to 10b. If your looking for affordable and not worrying about water then FL would top the list.
Advantages of CA, low humidity in summer time perfect climate for figs.
Disadvantages extremely expensive for what you get. Water costs a lot, and in drought.
Advantages of AZ, nice climate for figs lower costs of land compared to CA.
Disadvantages extremely hot in summer time, water access and price can be an issue.
Advantages of FL, plenty of water able to grow mangoes and other subtropical fruits with ease (in zone 10a-10b). Land affordable outside major cities.
Disadvantage, humidity, pets, and diseases. Takes more management and the right fig varieties to produce nice crops.
Personally I would not live anywhere besides these three regions. I would absolutely hate having to deal with snow and not being able to grow subtropicals.