Find one in there that you like in your price range. I pay $20 and have 1080p/4k remuxes. I used to spend at least 10 hours a month managing my own Plex/Emby, the money is well spent to me.

Also, buy an nvidia shield tv pro. It plays everything directly with no transcode, and handles all subtitles effortlessly without triggering a transcode.

I tried roku, amazon cube, apple tv, everything - the shield is the best still despite it's age. It's flawless.