Who is the best female rapper?

Is it the former Junior M.A.F.I.A member and Biggie's Queen B? One of New York's grittiest rappers of all time, Foxy Brown? The unpredictable, spit circles around your head Missy Elliot? Artistic, classical Jean Grae? The funkdafied Da Brat? Or is it the gangstalicious Eve or the supernova rap princess Left Eye? The lyrical Rah Digga or veteran rap queen MC Lyte or Lauryn Hill, who unleashed the best of both R&B and hip-hop? Or the intimidating, demanding, go-hard Queen Latifah or the "Super Bass" crooning Nicki Minaj?