What is the best Flannery O'Connor short story collection?

A slim but savage body of work where grace and grotesque violence collide across the American South. Which collection cuts the deepest?

1. 1
   The Complete Stories

   The 1971 posthumous volume that won the National Book Award and collects all of her short fiction.
   1000pts
2. 2
   A Good Man Is Hard to Find

   O'Connor's landmark 1955 debut collection, whose title story is a cornerstone of Southern Gothic fiction.
   314pts
3. 3
   Everything That Rises Must Converge

   The 1965 collection published shortly after her death, gathering some of her sharpest late stories.
   175pts