Nick by a long way, I have never heard him bitch or moan about candidates, yet when he puts his point across he does so firmly and fairly.
I also love that he does not try to look like a hard-nosed business man, but has a boy band cuteness about him.
Gabrielle is my second favourite, but she can be a bit fluffy at times.
I really disliked Adam at first, but cannot fault the way he has thrown himself into the tasks. Like someone else said, however, he has made one too many sexist comments.