Kennedy, hands-down. I never was a Johnson fan, (in fact, I still find him pretty unsavory,) but I’d take Johnson over Nixon or anyone’s Nixon-ness. Nixon was an oily slimeball back in the 1950s. His “Checkers” speech was one of the worst examples of using treacly fluff to get what you want. The country would have been better off without Nixon. And his little dog, too.