Total noob here with decent electrical knowledge however I would like some feedback on the direction to go with my controller wiring.

I'm using DMM's DYN4 750w AC servo motors/drives and DMM has two wiring diagram configurations which illustrate two ways of wiring the drives/motors;
1) using individual circut breakers/contactors and 2) the other using a single circut breaker/contactor and then distributing power via a relay terminal. Please see diagrams attached.

I'm trying to be conservative with the $$ but not at the cost of safegaurding the system. Is there a clear advantage of individual circut breakers/contactors
over a single circut breaker/contactor? In the single circut breaker/contactor I need to use compents with amperage that is much higher than individuals, for example (4 axis x 20amps = 80amp circut breaker)
which will not pop in the event one axis is eperiencing an electrical problem. Is my logic correct here?

Any input will be greatly appreciated and thanks in advance!

Kind Regards,
Lickercabnit