I voted Katie, because she was my absolute least favourite from the audition videos and I was wanting her to be fired at the end of episode 1. But since then what a turnaround.

It's always nice to see her hug the fired candidate and not try to act all superior about surviving or holding a grudge.
I also like Duane, and possibly Gabrielle, Nick and Jade.
After the first episode I really liked Jane, but I really wanted to see if she was just a head-strong woman or infact quite miserable and vindictive.
Unfortunately now I think it's more the latter.