All 3 have their merits. I'd say blonde, but she keeps turning away/doesn't wanna show camera her messy face, but i do like that her hair keeps falling onto her face/mess.
Probably the black girl; at 1:25, the 2nd hit, she gets nailed especially good.
The pies they use are FANTASTIC, IMO. Seems like a mix of the liquidness/smeariness that comes with Shaving Cream, but also sticks and glops almost like cake frosting.