So many good tv boxes,and which one is good choice?

I want to buy a TV box,so watching TV or other videos can be free,I found all kinds of TV boxes when I used Google to search tv box,I chose a few TV boxes,you guys give me some advice.

# NVIDIA Shield TV
It's higher priced than the competition,but it looks very good.
Price: $198.27
Video Features:
4K Ultra HD ready
4K playback at 60 FPS (VP9, H265, H264)
4K capture at 30 FPS (H264, H265)
Storage:
16GB (Note: portion of storage occupied by system software)
Wireless 802.11ac 2x2 MIMO 2.4 GHz...

So many good tv boxes,and which one is good choice?

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