OK, I couldn't resist; in no particular order (except, as he is for Mark
Seeley, Szell is-now and forever-on top):

1. Szell
2. Sanderling
3. Solti
4. Harnoncourt
5. C. Davis
6. MTT
7. Mackerras
8. Bernstein
9. Furtwangler
10. Gardiner
11. Marriner
12. Boulez
13. Dutoit
14. Barbirolli
15. Rattle
16. Norrington
17. Shaw
18. Klemperer
19. Kleiber
20. Pinnock
21. Giulini
22. Christoph von Dohnanyi
23. Boehm
24. Pickett
25. Hogwood

Note: in good conscience I have to limit the list to conductors whose
recordings or performances I have heard a good deal.  This leaves out some
pretty big names, obviously.

John Halbrooks <[log in to unmask]>