As a "Damn Yankee" from I'll take Bob Prince at #1, the long time play-by-play announcer for the Pittsburgh Pirates. When they fired him in 1975 Pittsburghers held a parade to protest the action! I will give Vince Scully is an overall best since he did do golf and football on TV. A close 2nd has to be Jack Buck of the Cardinals. I know that the south is not a hotbed for ice hockey, but you will not find a better hockey announcer that Mike Lange of the Pittsburgh Penguins. If you have not heard him, he is special as are his post-Penguin goal sayings! Finally, for football radio, I will take Bill Hillgrove of (you guessed it) the Steelers and the Pitt Panthers, but he is a far better announcer for the Steelers.
With all of that said I will tell you that the legend Larry Munson was well known and respected in the "rust belt" and what was known as the "Eastern Football Powers" of the 50's, 60's and 70's. RIP Mr. Munson!