The Verge: 8
The Fire TV Stick 4K comes away as a very strong value.[source]
PCMag: 9
The Amazon Fire TV Stick 4K is a nearly flawless media streamer. It supports 4K with HDR10 and Dolby Vision, it features Alexa for voice control with support for a wide selection of smart home devices, its new remote can control your TV's volume and power, and it can access a massive selection of streaming media both from Amazon's own libraries and most major third parties, all for just $50.[source]