Smart speakers are popular, and for good reason: In addition to playing music, you can ask a smart speaker a question, and it answers back. But speakers are limited to telling you what you want rather than showing you. The concept of "show, don't tell" is a fundamental rule for writers, and it's also an important guideline for technology. If you want a voice assistant to show you things instead of just telling them to you, you need to take a step past smart speakers to smart displays.

Smart displays are effectively smart speakers with touch screens attached to them. They offer the same hands-free voice assistant features, letting you play music, check the weather, and control your smart home devices just by talking. But the screen adds a whole new level of information and control on top of that. When you want to play music, you can see album art or watch the song's music video. When you want to check the weather, you can see upcoming temperatures and conditions for the week at a glance. When you want to control your smart lights, you can tap or slide your fingers to dim them to just the level you want.

that the company did the same with smart displays in the form of the Echo Show. And, like the Echo, the company updated and expanded its line with new models. Now, several smart displays are available, spanning two voice assistant platforms and multiple manufacturers. We've gathered the top models we've tested here, along with a guide to each platform.

The Best Smart Display Deals This Week*

• Google Nest Hub (2nd Gen) — $99.99

Amazon Alexa

Echo Smart Displays

Amazon Alexa is available on the company's own Echo Show smart displays, including the Echo Show 5, the Echo Show 8, the Echo Show 10, and the Echo Show 15 (all named for the size of their screens). That's only the start. Facebook has gotten in on the action with its Portal series of smart displays, which include the Portal, Portal+, and Portal Go. All of these devices use the Alexa voice assistant, but how they work varies.

With the Echo Shows, you get full access to all of Alexa's capabilities. They can show or tell you anything you want to know (within Alexa's powers to answer). They can also play video from Amazon Video and a handful of third-party services, and they even have a fully functional web browser. They also offer touch-screen control of smart home devices and can show live feeds from compatible home security cameras. You can even make phone calls through them.

The Echo Show 10 has an added, unique benefit: a motorized base. It can rotate to follow you around the room, swiveling the camera and the screen to stay pointed at you. It's a very handy feature, especially if it's placed on an island or table in the center of a room. However, because of this feature, the Echo Show 10 is among the most expensive devices on this list.

Amazon Fire Tablets and Show Mode

Amazon's Fire HD tablets also include Show Mode, which makes them act just like the Echo Show. Amazon even offers a charging dock that automatically puts the tablet in Show Mode (or you can simply use another tablet stand). It's a functional solution and a handy option if you don't want your Fire HD to be sitting flat and unused when it's charging.

However, a tablet's sound isn't nearly as good as the Echo Show's, and it lacks the sense of permanence a smart display offers.

Google Assistant

Google Nest Hubs

Interestingly, the initial Google Assistant smart displays weren't made by Google. JBL and Lenovo hit the market first. Google didn't release its Nest Hub until after the third-party smart displays came out. Now there are two models, the Nest Hub (2nd Gen) with a 7-inch screen and one speaker driver, and the Nest Hub Max with a 10-inch screen and stereo speaker drivers with one woofer and two tweeters. You won't find a web browser on any of these devices, but you can access YouTube, including live TV through YouTube TV and music through YouTube Music. Curiously, Google Assistant prefers accessing media through those services instead of the Play Music and Play Movies & TV stores. All Google Assistant smart speakers and smart displays are also compatible with Google Cast, so you can easily stream media to them from any compatible mobile app.

The usual information and smart home features are also available, and while Google Assistant's selection of supported home automation devices isn't quite as massive as Alexa's, it's a bit better at dealing with natural language and less picky about syntax. You can also make phone calls with these smart displays, and video chat through Google Duo.

Facebook Messaging (and Alexa)

Facebook Portal

Facebook's Portal smart displays are capable communication devices, even if we have concerns about Facebook's issues with privacy and data. Communication is their first and foremost function, with other smart display features coming second. Video chat is straight through Facebook, so you're covered if you want to talk over Messenger, Whatsapp, or Workplace. But you can't make phone calls or use Amazon's Drop In messaging.

The Portals feature Alexa voice control, but the implementation isn't as comprehensive as it is on the Echo Show. They also can't play Prime Video content or show lyrics through Amazon Music (though they can play music through Amazon Music, along with other internet radio services). It's Facebook first, Alexa second.

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