[amamnn]

Better or worse are relative terms--Nickle plated brass is better at resisting corrosion when left in a firearm for long periods of time - such as in a policeman's gun when the guy does not get out to the range a lot--or if the cartridge is left in Barney Fife's pocket.............

Brass cases will be easier to work with (reloading works the brass) for a longer period of time and are more easily restored to something like their original ductility through annealing than are nickle plated cases.