Pagerank and article submission

I always hear that article submission is a good way to get links back to your site. If I have 10 articles would it make more sense to submit them to 10 different article submission sites (assuming they all have good PR themselves) or would it be just as good to submit them all to 1 or 2 sites? It's the same number of links back but would they be weighted differently coming from more sites?


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Digital Marketing Agency|Seo