Epeiros, of course!
Truely elite phalanx units to counter other phalanx-based armies and Thorakitai if you need more mobility (I tend to use a roman style army with 4 units of thureophoroi/4 thorakitai and 2 hypaspistai + regionals when I´m tired of hammer and anvil tactics). And you have the Molosson Agema, one of the best heavy cav in the game. Oh, and there are the thracian falx guys and peltastai