I'd have to say "neither!"
Both serve beef that is pumped with chemicals. The "beef" industry has a bad rap as being cancer causing, but this is false. It's the chemicals they put in cows that cause cancer. If one or the other started serving beef without the chemical cocktail, I'd have to say they would have my vote.
But in this current environment where Corporate Party America is trashing the Constitution, bailing out criminals and attacking heroic whistleblowers, I'd have to say, "Boycott all Corporate products and services."
When the President has his "Kill List" which includes Americans, when the government has taken away the rights our founding fathers fought for, I don't trust anything that the Corporate-Government hegemony has to offer.
Obama has even sent out questionnaires to military officers asking them, "Would you obey a presidential order to fire on civilians?" All officers who answered "No," are immediately dismissed from their commissions and drummed out of the military.
And the recent, suspicious death of hard-hitting journalist, Michael Hastings, makes me wonder if he was on Obama's Kill List.
And you thought your simple question was merely and only a "consumer" issue. It's far bigger than that.
When the psychopathic rich don't care what happens to our young boys in uniform, just so they can make a few more million, it's time to wake up and restore the Constitution to the people and declare Corporations not to be "people." After all, they commit crimes and no corporation has yet been put in jail for them.