My personal ranking:
From best to Worst
1) Eisenhower
2) Ford (not in terms of executive competence but in terms of his honesty and decency. He inherited the Presidency at it's nadir and did an admirable job of repairing it's image.
3) Nixon
4) Lincoln
5) Ronald Reagan
6) George H.W. Bush
7) George W. Bush
8) Teddy Roosevelt
9) Calvin Coolidge
10) Warren Harding
11) William H. Taft
12) William McKinley
13) Chest A. Arthur
14) Ulysses S. Grant
15) Rutherford Hayes
16) Benjamin Harrison
17) James Garfield









