Fighter: PF
Rogue: PF
Wizard: PF
Cleric: PF
(PF counts, right?)
Other things I can go back and forth on, but the PF versions of the basic classes (including the archetypes) are much better than any other incarnations. Their takes on the other classes (the barbarbian for instance sucks, while the sorcerer is great) vary, and their non-class rules are not all good, but they absolutely nailed the basic four.
Of games with D&D on the label, I think the 2e versions are the best, since I now tend to see 3.X's classes as written as limited versions of the PF versions.