the most "transcendant" boxer of all

Ali certainly became the most famous man in the world, but has he reinvented himself to the extent Foreman has, and who has had the greater impact on our daily lives? In terms of a future, is there really much of a contest if each man lives another ten, 15 years or more? (And no, I do not own a Foreman Grill or Meineke Muffler. I have, however, used D-Con roach killer!)