Put me in the "can't tell any difference" camp. Best Food/Hellman's or Miracle Whip are just about the same to me. I've never had Duke's so I can't say. I will admit that I do prefer the Hellman's with Olive Oil, but all my wife buys are "Lite" and "Low Fat" things.
Maybe I'll take up rrconductor's offer of a quart. (I'd settle for a half-pint.)
