You really want to stir the pot, don't you young lady!!???
Obviously, you have to take into consideration just what lifestyle you are persuing.
If you like large cities, then Santo Domingo is where they sign all the checks and where everything is happening. If you are comfortably wealthy, then La Romana may well be your spot or Guavaberry....
If you like cities but also a little quality of life, vis ? vis, cultural activities, restaurants, clubs, golf and other retirement activities as well as more active sports, then Santiago might be good.
If you want to be with other foreigners who are looking for a pleasant retirement, then the North Shore-read POP-Sos?a-Cabarete-R?o San Juan.-- might be just right.
If you want to get away "from the madding crowd", then look to places like Jarabacoa, San Jose de las Matas, El Rubio, Monci?n, Mao, Monte Cristi, La Vega, Villa Trina, Guananico, Mamey or a hundred other small villages or smaller cities....You can sort of "drop off the map."
HB
Each of the choices has good points and bad.