Great thread and poll choices!
I picked backstabbing friends. I actually hate flying under the radar more (*cough* Alex */cough*) on average but, flying under the radar isn't necessarily the most intentional way to gameplay in my opinion. For example, I don't think Alex tries to be so boring. Chelsea was flying under the radar for a while (I think), but he bungled it up by trying to be a kiss ass.
It's sound strategy to let everyone else duke it out first fighting for the bottom of the barrel for the pettier **** and then as the game gets more serious and you have a strong place in the group, step out a little bit more to define yourself in the game.
Now flying under the radar for the win? That sucks, but is it really the fault of the person flying under the radar or the other HM's who force the vote away from themselves?