I would also suggest if you're new to Fania, or Salsa music in general, a nice place to start is that 1970-1973 Willie Colon album run featuring Hector Lavoe as his singer. This is like the equivalent to any important album run from any genre's most important artists. Really innovative stuff Willie was doing by exploring further than mambo/son/rumba/guaguanco/boogaloo canon by paying homage to the direct Afro influence on his music:
1970: La Cosa Nuestra 1971: La Gran Fuga/The Big Break 1972: El Juicio 1973: Lo Mato
Every track on these are a killer; even his 1972 Xmas lp "Asalto Navideņo has "La Murga" which gives any of these Fania songs a run for their money: