Normally, I like to dig down to the first source, but I've noticed those articles don't get the same attention as submitting from "the big sites". I submitted the original source for a lot of today's A6 articles, but it got no upvotes and only one comment.
Looking over my submission history, the original source rarely gets the attention, and the rewrites articles get a lot of upvotes and comments. I'll keep alternating to see if there is some secondary pattern.