I am a fan of both but if I had to choose one it would be ceasar all the way.
I do think ceasar's method works better with medium to large dogs just because he can apply his methods easier(did you guys see the yorkie episodes? boy all I can say is he earned his keep those times

)
and victoris methods work better with the medium to small but it takes so long to retrain them with her method and ceasar comes in and boom their changed and all you have to do is maintain what he started.
I love them both but I loved victoria more before we americanized her