Santu De Silva tempts us:

>Why don't we do our own?

OK. . . I'm game.  Here is mine, definitely unsorted and unprioritized,
except for Szell being first and the HIP guys last.

  (1)   George Szell
  (2)   Fritz Reiner
  (3)   George Solti
  (4)   Colin Davis
  (5)   Christoph von Dohnanyi
  (6)   Pierre Boulez
  (7)   Leonard Bernstein
  (8)   Wilhelm Furtwangler
  (9)   Carlos Kleiber
 (10)   Bruno Walter
 (11)   Otto Klemperer
 (12)   Neville Marriner
 (13)   Arturo Toscanini
 (14)   Chaz. Mackerras
 (15)   Robert Shaw
 (16)   Simon Rattle
 (17)   Dimitri Mitropoulos
 (18)   Eugen Jochum
 (19)   Eric Leinsdorf
 (20)   Esa-Peka Salonen
 (21)   Evgeny Mravinsky
 (21)   Istvan Kertesz
 (22)   Christopher Hogwood
 (23)   Philippe Herreweghe
 (24)   John Eliott Gardiner
 (25)   Trevor Pinnock

Mark