Samsung 960 - From poor to rich! What now...

Following the conversation about a month ago I here regards 960 SSDs I was starting to think I may not get one in time for my build sometime this month and the 'in stock' messages kept changing a B&H so I order one of each, figuring I'd cancel when the first once came in. Last week I got an email that the order had shipped, so now I have two.

Any suggestions. I was probably going to go with an 850 for boot, but I could also keep both of these and use it with an Asus x99 Deluxe II as it comes with the extra pcie card. Or I can send one of these drives back, etc.