If we're talking about printed magazines that still carry weight, 'The New Yorker' often feels like the final word for a certain kind of literary fiction review. Their critics, like James Wood, can make or break a debut novelist's reputation in certain circles. The analysis is dense, sometimes bordering on academic, but you read it knowing they've taken the book seriously as an art object, not just a product. For a more rounded view, I still pick up 'The New York Review of Books' at the library. The essays are lengthy and assume you've got some background, which I appreciate—they treat the reader as an intellectual equal, not just a consumer looking for a weekend read.
That said, 'trusted' depends on what you're after. If you want to know what's actually selling and what a massive mainstream audience is enjoying, the reviews in 'People' or even 'O, The Oprah Magazine' are arguably more 'trusted' by that demographic. They cut through the literary posturing and tell you if a book is emotionally engaging, which, let's be honest, is what most people want. I find their picks are way more reliable for book club selections that will actually spark conversation, not just admiration for the prose. For genre-specific trust, 'Locus' is basically the bible for science fiction and fantasy—if they give a novel a starred review, it's going on my list, no questions asked. Their reviewers live and breathe the genre and can spot a derivative plot from a mile away.
I don't think any single source has a monopoly on trust anymore. The landscape's too fragmented. I use 'The Atlantic' for big-idea nonfiction takes, 'Kirkus' for its famously blunt pre-publication assessments (though you have to read between the lines of their sometimes-snarky tone), and 'Booklist' for library-focused, balanced recommendations. It's less about finding one ultimate authority and more about finding a few voices whose taste and priorities align with yours, whether that's stylistic innovation, narrative drive, or pure entertainment value. My shelf has books loved by all of them, and books loved by none.