After months of thinking, curating, photographing, more thinking, we've come up with a holiday gift guide that covers all the bases (and budgets), from laptops and mobile devices, to toys, to the smart home, to book and media recommendations (only on nerdy subjects, of course). All told, there are more than 150 items in our guide, spanning 13 categories, with advice from 25 of our writers and editors. You know, the people testing and reviewing this stuff all year long. This section of our guide focuses on the best home theater gifts.