in north carolina the state is split in half as the eastern part of the state is supposed to get MASN and FSN South, while the western part of the state gets MASN, FSN South, and SportsSouth. The western part of the state (greensboro and everything west) is deemed Braves, Nats and O's territory while the eastern (raleigh/durham/chapel hill and everything east) is exclusively Nats and O's. As soon as the fcc rules on Time Warner's appeal MASN will become very widely available in the sate of NC as currently is available only on d* and e* and smaller cable system in the state.
FSN South is a pretty good rsn as it does additional acc and sec games through acc and sec tv. For my state is shows the hurricanes and bobcats (starting this year). It is pretty worthless during the summer, especially for the eastern part of the state as they show very few braves game and reds games no one cares about, neither of which can be seen east of greenboro. FSN South has a lot of alternate feeds as it the primary rsn for both north carolina team, the hawks, the predators, and it does some grizzlies game too.
MASN in my opinion is one the best rsn out there due to their due to their awesome coverage of college sports. They do a good job balancing the O's and Nats during baseball season and show a ton of espn regional and other college basketball and football games. Pretty much any espn regional big east game will be on this channel along with special deals with ecu, uncw, george mason, and davidson. Just a great channel for a college sports fan like myself.
SportsSouth is ok for North Carolina as the provide the braves and have a deal with the southern conference for a game of the week in football and basketball, but other than that there focus is more atlanta has they are the exclusive home of the trashers and get grizzlies game when the preds are playing at the same time.