Most die manufacturers recommend not using nickle cases.
In my experience, they crack sooner then brass cases and the nickel starts to flake off after about 5 loadings and will embed in the carbide and put racing stripes on your cases.
Their sole purpose in life was to be placed in cartridge loops on a gun belt to prevent the brass case and tanning compounds from discoloring the leather and etching the case.
Beyond that, some people just like "shiny."
I have used nickel plated cases for 30+ years. No problems other than a somewhat reduced life. They are harder and thus a bit more brittle than brass (theoretically). WTS, I have a bunch of nickel plated .38 Special cases that have been loaded countless times. The nickel has worn thin and the underlying brass is showing through, but no cracks. In .38 Special there seems to be no real coorelation between case life and plating. As many non plated cases develop cracks as do the plated ones.
In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball
I would rather have brass than nickel. Yes, I do have some nickel rounds in .38 that the nickel has worn through and they are still great. More often they split and I've had two head separations which can be a royal pain in a gun trying to get it out. I make reduced loads, so it is not a pressure thing. Rifle and pistol chambers can vary and that along with belling the mouths will give me splits more often with nickel.
I prefer brass for plinking loads and hang on to the nickel for my hunting loads to help with greater climate change and being in the weather. As to reloading them I have seen no difference other then brass seems to slide in and out of the dies a bit easier but brass tends to have some natural lubricity to it.
If the pain is lacking so is the discipline...
"the only 911 call I need is chambering a round" - Mr. Muller, MO car dealer