7 Soldiers of Victory and The Defenders
As big a fan of the Justice Society of America as I was, I always thought that the SSoV were equally cool but never got the same notice.  I liked that the team was filled with primarily street-level heroes, which made for different types of tales that could be told than with a group filled with heavy hitters like the JSA.  Also interesting was the fact that heroes and sidekicks alike were art of the roster.