Bush: Far better, obviously.
Clinton: Far better. Not a Clinton fan.
Bush I: Somewhat better.
Reagan: Better, from my political perspective.
Carter: Far better.
Ford: Better, sure.
Nixon: Nixon was an unbelievably awful President. Far, far, better, as is almost everyone else on the list.
Johnson: Not an LBJ admirer by any means, but he had a lot of commendable, important achievements along with all the horrible, horrible mistakes.
So I'll go with Johnson. Mind you, considering the competition that's kind of damning with faint praise.