Maybe it's because I spend so many of my working hours thinking and writing about politics, but my answer would be "neither of them":
WASHINGTON (AP) — People would rather barbecue burgers with Barack Obama than with John McCain.
While many are still deciding who should be president, by 52 percent to 45 percent they would prefer having Obama than McCain to their summer cookout, according to an Associated Press-Yahoo News poll released Wednesday.
I wouldn't mind having dinner or a drink or two with either or both of them. Perhaps in such a social setting, they could loosen up enough to talk about politics on some higher level than Democratic or Republican cant. Maybe they even have an interest or two besides politics (though I rather doubt it). But a barbecue? No way. That's for people you either know or are at least comfortable enough with to relax in their presence. Those who have had for so long the goal of being president would be so singleminded and focused that I couldn't imagine a more boring barbecue guest. Bill Clinton would have been an exception, I guess. He's the only president in my lifetime who didn't come out of the job looking haggard and beaten down, and you just know he has a million stories to tell.