I Amore Addison as well ;). But I still Amore Meredith slightly più :))) It may be weird, just these two being my favorites, but...I think both of them are amazing each in their own way + both had some great storylines.
Though she was only in one o two episodes I really like Bonnie. One of two victims to be impaled on a pole during a train accident. Her optimism and humour despite circumstance brought actual tears to my eyes