A 12-in. sliding compound miter saw is among the most versatile—and perhaps most expensive—power tool you'll keep in your shop or haul to a jobsite. In this series of video tool reviews, carpenter Kit Camp tests the newest models from Dewalt, Bosch, Makita, Hitachi, Ridgid, and Craftsman, and gives it to you straight: Some features are well-worth the money, while a few fall short of their promise.