QPR are shit, but so are Swansea, Burnley, MK Dons and Sunderland.
And if you think Blind and Falcao will make a difference, I doubt it. Blind didn't help a shit Netherlands side (with teammate RVP) against Italy and Czech Republic.
It all comes down to the question, would you really bet against United? Even though they are shit at the moment, they're still one of the biggest clubs in the World, which makes me a little hesitant...