I would suggest you write your own and genuine articles with quality content or get it prepared for you and promote it just on one website. I mean one article to be submitted on just one article directory. If you have 100 articles, you can submit on 100 directories and make sure that particular article content exists on just one directory or website and there is no copy of it elsewhere.
Moreover, now a days many article directories do not accept an article that is already submitted elsewhere. If you promote 100 genuine articles and with it one copied content, you are still prone to getting hammered.