Feynman was a uniquely gifted teacher that made things intuitive and simple. Those other books are course textbooks for physics majors, and they require an order of magnitude more effort and time to understand.
When I was a physics student the best students seemed to use both types of materials simultaneously. A work like Feynmans would give a bigger picture and more intuitive understanding of what is going on and help you not miss the forest for the trees so to speak, the regular textbooks will teach you all of the little details and math tricks you need to actually solve difficult problems with these concepts.
When I was a physics student the best students seemed to use both types of materials simultaneously. A work like Feynmans would give a bigger picture and more intuitive understanding of what is going on and help you not miss the forest for the trees so to speak, the regular textbooks will teach you all of the little details and math tricks you need to actually solve difficult problems with these concepts.