I've taken to running everything through fakespot.com. It's really helped me weed out the real stuff from the fakes. (by the way, the product lillabug recommends has a "c" grade in terms of fake reviews, but the adjusted star rating is still 4.5.)

Correct me if I'm wrong, but I've heard that satin works just as well as silk for keeping hair tangle free? I don't use one myself (yet), so I could be mistaken.