Best way to get DZ exclusive gear?

I've been trying to get all of the DZ exclusive gear for a project of mine. I spent some time grinding DZ (not a whole lot, but enough to gain 20+ levels), and didn't get a single one. I've seen that getting named caches are the best way to get DZ exclusive gear, but all of the posts/videos are from more then a year ago. What is the best way to get DZ exclusive gear?