I’ve got a report today discussing this matter, in this article the author insist and he is very confidence when he told this.

If you’ve get a back link from a site main index have PR 10 google considered your back link from that site as PR 10. I am little bit confused with this, how come that your backlink from that site is PR 10 if your backlink is located at a page of that site with 0 page rank.

But if you get a back link from a high pr site for sure you are getting a backlink from authority site ang search engine love sites that get back link from site with high PR specilly if that site is PR 10.