After traveling around the country for 21 years I have accumulated many images of the various Carnevals in the Dominican Republic. You can see them in this YouTube photo video.
My favorites towns in desending order were La Vega, Santo Domingo, Bonao, Santiago, Monte Cristi, and Puerto Plata, San Pedro de Macoris, and La Romana. They all had something different and the people were always welcoming and very enthusiastic.
https://www.youtube.com/watch?v=TrIBdU3SSw0&list=UUOZ_25V9fIl7PJmNoj0-udA&feature=c4-overview
My favorites towns in desending order were La Vega, Santo Domingo, Bonao, Santiago, Monte Cristi, and Puerto Plata, San Pedro de Macoris, and La Romana. They all had something different and the people were always welcoming and very enthusiastic.
https://www.youtube.com/watch?v=TrIBdU3SSw0&list=UUOZ_25V9fIl7PJmNoj0-udA&feature=c4-overview