Was just about to post fakespot.com -- I've used it to great benefit in spotting some of my purchases that didn't have a reasonably priced, stand-out name brand to choose from (HDMI -> RCA audio splitters, or as mentioned in this thread, good bluetooth wireless earbuds.

Amazon is consistently allowing multi-hundred unverified 5 star reviews for new products to persist, and my wife and I are starting to drift to other, more reputable resources. After a decade+ of Prime membership, this is a really disappointing betrayal of trust.