NOS Booster, use or rebuild?

Recently, sent out and received a rebuilt booster by masterpowerbrakes in lynwood, Washington. I since acquired an NOS Booster from the shelf. While my original (Midland) was being worked on I asked about the NOS one. He immediately said it would have to be rebuilt as they do this all the time with NOS off the shelf boosters all the time.

I like the original cadium plating with the NOS and I stripped down my original.

My question is, would you bolt on the NOS and see what happens or hold off; send it out for a rebuild