Fighter - 4e did it right for me.
Rogue - 3e/4e, not too terribly different for me. Give me skills, maneuvering, sneak attack, and I'm good to go.
Cleric - 4e, except I would have liked domains and other venues of customization to matter more from the start. They got close with essentials, but there is still room for improvement.
Wizard - Every edition had some high points and failings, this one is a tough call. I'll go with 4e, with the caveat I hate the ritual system, and wish there was something better in its place. In previous versions I dislike the low level incompetence, and high level godhood.