I think it will be between Ed and Tahan. T has been very quiet on the screens, and Ed, I dislike him, and maybe others are starting to do so too.
One thing, it would be good to get rid of peripheral players, and get down to Meatheads vs Tim. Tim has Drew, Mikkayla, a grown up Ben, and a blonde. Heidi sides with the mainstream.
Tahan could go, and leave less ripples, although I like her way more than Ed, Ed is involved in more storylines. It would be a shame for a person of colour to go home for the third week in a row, but Ed has meathead tactical duties, leading Jade on whilst utterly rejecting her in an attempt to destroy her, before her puppy love routine sours his rep with the voting public, and a duty to show footy boys are better than long haired Newtown boys. I would love to see Ed and Jade face off against Drew and Tully... so many storylines if Jade, Tully, Mikk, and unfortunately Ed stay.
Caleb would be a lieutenant in the confrontation for power. It would be a big finish. Hate ya, Ed, but kind of hope you stay, as long as Tully, Jade and Mikk do too.
Tully seems to be hell unpopular, but she is polarizing, and there are plenty of emotionally draining innercity girlfriends who are sure to want to save her. Jade probably has a base too. Mikkayla definitely would. This six nominees, vote to save system does tend to let polarizing players through, while expelling boring ones.
I think it might be Tahan's turn to go if she doesn't get a nice long confidential piece.