Bigger is better, right? Guess we’re about to find out, as Amazon has unleashed its largest Echo Show smart display to date. A bigger version of the just-refreshed and wall-mountable version of the Echo Show 15, the Echo Show 21 ranks as Amazon’s largest Alexa-powered smart display yet—and indeed, we’re hard-pressed to think of a roomier smart display, period. The 27-inch, Wi-Fi-connected Skylight Calendar Max ($600) is even bigger, but it’s designed for tracking appointments, to...
