By the numbers, in the US, who was the greatest serial killer?

Question

I know growing up in Washington state, Gary Ridgeway, the Green river killer is cited as the greatest by I don't know if that's true.

http://www.alternet.org/story/17171/

Answer 1

Tommy Lynn Sells

Answer 2

the zodiac killer was a mystery person

he killed 37 people one lived Jack Tarrance was him

he died in Olympia, Washington at 78

Answer 3

Ted Bundy was right up there with Ridgeway. He begged for more time to tell about more of his victims but was put to death before hand.