Chael by a long shot. but the real question is will any of this bullshit have an effect on their fight.. Johns psyche being fucked with is just one more weight on the tipping scale for Chael and he'll need every bit he can get.
I was actually quite surprised by Chael pretty early on. I kind of judged him based on his ridiculous smack talk from previous fights. He's alright, has a good head on his shoulders, inspires his team and overall seems like one of the better coaches I've seen on TUF.