There are great copywriters here. But nobody is the "best". I think you are confusing copywriter and content writer. Content writers are the ones who write articles. There are good Content writers here too. You need to look around, look at some itraders, samples and so on. What niche do you need the articles in?
I'd be happy to give you some recommendations for some of the better content writers here, but would also need to know your niche first. A specialist is much better than a generalist for this kind of thing, so if there's one here, we'd need the niche info to be able to point you to them.
If you intend to host a contest I suppose many will compete. If you are looking for best recommendations better rely on what Jenn says.I believe it is something healthy with good intentions.I must tell you that there is nothing like "the best writer". Each one has its own uniqueness, skills, and flair for writing. It depends on what and how you see in to it.
At the rate you're paying, you won't get the best. If you're paying about 10 cents per word, you can get a decent writer though, just not the best.
You might want to try DeniseJ. She tends to write on female-oriented subjects, so it sounds like your work would be up her alley.
I think a woman writer would be best for your niche. Sorry fellow men, but when was the last time you thought about a handbag!
I have worked with numerous writers here on DP. My highest recommendation goes to member coco0473. She is by far the best one I have used.
I agree with "Lightless" - nobody is the best. I do, however, suggest that you choose wisely. I'll refer to one of my quotes... "nothing is never its best" I think that says a lot. (just being honest lol)