I have learned that each gaming center (outside of Vegas) has a top poker room that one can go to and avoid the other rooms in the area. For Biloxi, it is the Beau Rivage.
Outside of that, the Beau Rivage is better than other city's top room in terms of comps, types of games, number of players (and deep pocketed fish), and general atmosphere. I would rather travel the extra hour and a half to go to Biloxi than Tunica just because of the Beau Rivage's poker room is that good.