Answer:
Casting Manager or Casting Director
Explanation:
I can't find the difference between the two, but it's definitely not the director or the producer. I'm leaning more towards casting director.
I would say it is the third one down (visit the restaurants in the same trading area) because that is the only one where you gain the knowledge first hand. When you have middle men (people writing online, people who have visited the restaurant themselves, or members of the BBB) there can be a bias as they may claim the competition is better when it is not for personal gain.
