Buy a Note 8, get a second Note 8 for free (after rebate). T-Mobile's latest incentive offers the best deal yet on the upcoming handset, and is compatible with Samsung's Do Bigger Things promotion.
https://www.notebookcheck.net/T-Mobile-s-latest-BOGO-promotion-gets-you-two-Note-8-phones-for-the-price-of-one.246222.0.html
There are catches on this Bogo offer. First, you will have to add an additional line even though you dont need it. Second, all your lines have to be in unlimited plan. That means each additional line will be $25 + tax & fee. I have 6 lines and that is just a horrible Bogo offer.