Most people are buying Apple TV or Roku these days but I stick with my WD TV live plus because it still plays all the file types that those other boxes can’t. MKV, AVI, MP4, you name it. I have it connected to my home network via a small wireless Ethernet dongle you can get for cheap for streaming content from the internet and from my PC.
https://www.amazon.com/Live-Plus-1080p-Media-Player/dp/B003MVZ60I

