Harry/Cho... you have a chance to develop her into a good character instead of the way JKR butchered her in OoTP. She made CHo seem to be an airhead without having any of the attributes that is supposed to be a Ravenclaw. It seemed as if Cho was more a hufflepuff the Ravenclaw and that does not make sense since she is the Ravenclaw Seeker. Hermione best serves Harry as his best friend and should be kept that way so thta she could develop a relationship with an intellectual that will challenge her mentally.