The problem with Bianca is she is always in character. I am sure she is a nice person in real life but she just doesn't know when to keep quiet. I do think Laganja went a bit over the top though with her reaction.
For me, Ben is the strongest so far. I think she is a great entertainer. My ranking of the remaining 10 is:
Ben de la Creme
Courtney Act
Bianca del Rio
Gia Gunn
Adore Delano
Milk
Laganja Estranga
Joslyn Fox
Darienne Lake
Trinity K Bonet
Not sure of a winner yet but I think Ben, Bianca and Courtney are in the mix, with Adore as an outsider, but I think Adore will be let down by her lack of experience in making costumes. She's already said she wore her most expensive gown.