I personally think that either Dave or Zack should go. But since Zack has been there for so long and the ladies seem to have bonded with him, I think Dave or Barbarino is more likely to go.
The wacky thing is that Fox gave us no clues in their previews last Wednesday. It is hard to say for certain who is going until their "picking" ceremony. Damn those producers and Fox! Pulling us in and trapping us like this!!