The remote is the best I have used, (not the chromecast stick) it has Infrared (to turn on the tv and volume) and is Bluetooth.

I haven't used a fire tv since gen 2. But the fact that I can run x265 videos on it makes me happy, (I don't have a 4k so...)

This one (https://www.amazon.com/Android-Streaming-Control-Assistant-100026240/dp/B0B75QMC7X)