Which Echo should I get? A buyer’s guide for Amazon’s dizzying array of Echo devices

So, you want to buy an Amazon Echo speaker for yourself, or perhaps an Echo display as a holiday gift, but which one? An Echo Dot, an Echo Plus, an Echo Sub, a plain-old Echo, an Echo Show? Or maybe an Echo Flex, an Echo Input, or a Dot for kids? Yikes. We’re here to make some