I use the nickle plated brass for the leather loops on my ammo belts. If I leave a brass round in the loops, it turns a wonderful ugly color.
The nickle seems to last longer. I like to keep the loops full so they do not shrink. My belts hang on the wall and the look of cartridge loops full of ammo brings a smile to my face.
In my situations, I have noticed I do not get the same number of reloads out of my nickle that I get out of my brass, but I still get at a minimum several very good loadings. For me it is half - a -dozen of one and six of the other.
If I notice the nickle coming off, I remove the die and clean it and toss the nickle case.