Bobs and Pixies

First, Victoria Beckham introduced her friend Katie Holmes to the bob, the hairstyle that she worn for long time (I think). The style became very popular; as my hairdresser said, 1/3 of her clients wanted either the cut or to know if it was a good haircut for them.

Katie recently changed her style to a pixie cut; she looks cute, but I think she was more sophisticated with the bob. Now Victoria followed in Katie's steps and she also got a pixie.

Which one do you prefer?