Nickel plated and pure nickel guitar strings?

I just got DR Pure Blues 11-50 gauge pure-nickel strings instead of my previous Ernie Ball power slinkies, so I was wondering. I just got done changing the strings too, and I have yet to break them in, so I can't really tell a difference as of yet.
I heard (from my guitar) pure nickel strings are brighter.
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Quote by kyle62
A little bit on the mellow side, and a slightly lower output. I prefer them mainly for the smoother feel, though tonally the difference is quite subtle.

I was recommended trying these as opposed to Ernie Ball Power Slinkies, so that's why I was asking. Thanks guys!