I would have to say: Multiple POV #3 with Brianna Love and Riley Shy. I do not have a link because I found it though a pay site, but it is well worth a search. studio: Vouyer Productions
If we`re talking about real videos, rather than ones whcih we`d like to see made (eg Katherine Jenkins being bondage gangbanged), then I`ll take Alanah Rae`s "Purchased" movie for Sex and Submission.