2 and 3 are my particular favorites, good balance of "giving up pitifully" and "resiliently fighting the torture" between the two. Great idea to use brawler dogs for the situation.
If i can suggest, i'd use a little more clavicle and neck, as they're not only potent pieces of femininity but will also complement the long-limb body type of dobermans as a whole.
Very sinful, very appreciated, hahaha