There are more sides to the story than just Cesar or Brad.
I dislike both because their methods are based on some fairly antiquated pseudo-science of "dog psychology" and their techniques usually involve the heavy use of P+ (or positive punishment) which (again) is a holdover from a bygone era.
I think it's fantastic that you are interested in dog training and that you are doing your research about it first
If you are interested I might suggest a few books from another perspective:
On training
http://www.amazon.com/Power-Positive.../dp/0764536095
http://www.amazon.com/Other-End-Leas...0888201&sr=1-1
http://www.amazon.com/Culture-Clash-...0888228&sr=1-1
On learning theory
http://www.amazon.com/Dont-Shoot-Dog.../dp/0553380397
On dog evolution
http://www.amazon.com/Dogs-Understan...0888258&sr=1-1
On dog body language (this one is short and sweet)
http://www.amazon.com/Talking-Terms-...0888293&sr=1-1
Happy reading!