Easiest Way Back to Stock (rooted)

So I have been looking around in the Development forum and there are so many ROM options out there now. I have been on CM 12 nightlies for so long now I am out of the loop on stock builds and all. I am looking to just go back to a completely stock build (with root). Can anyone point me in the right direction for the files I need?
I have a Google Store bought N6 and I am currently on Verizons network.


Thanks!

EDIT: I would also like to be on the latest (and greatest) build.