What are your taste in Music, if they are more punk (i.e. Nirvana, Dead Kennedy's, Black Flag, so on...) I would suggest Dirrty first, more Dirrty I would say, but I would Also recomend Daydream Nation.

If you are more pop oriented, I would suggest Goo, or Sonic Nurse, also Rather Ripped.

If you like music that will mindfuck you, I would suggest the first EP, or Confusion is sex.

i would say get sister and confusion is sex.