I think that Mike deserves it (not Uncle Michael, but Cousin Mike). He treats the staff/board of trustees with respect, he helps out around the mansion, and he is grateful for every reward he wins from the competitions.
My second choice would be Jill. She does seem a bit insecure about things, but she's generally kind-hearted, and she also respects the staff.
The others can go back home and eat spaghetti the rest of their damn lives for all I care...especially Anthony! YUCK!