Batteries have a continuous and burst amp rating
ESC's have a continuous and burst amp rating
Motor's have a continuous and burst amp rating
In an ideal world you want your ESC and Battery's continuous ratings to be greater than your motors burst rating
Example
100 amp burst motor
120 amp cont. ESC
150 amp cont. capable battery (5000mah 30c)
If you keep the same motor and simply change ESC's you are unlikely to notice any difference
Cheers