I am not sure exactly where BrightHouse and Comcast boundaries are. I can say that my home in Carmel is in BrightHouse territory. Some of my family in the Northeast side of Indy is in Comcast territory.
It may be easier to decide where (schools, surrounding area, apartments vs house, activities) you want to live to help narrow the selection choice. The cities of Carmel
probably have the best school districts in the state which help resale value of a house assuming you are getting a house.
For arts, Carmel has the The Center for the Performing Arts
. Also, Carmel is the roundabout capital of the U.S.