Which is better HDMI ARC or optical?

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Tags

1. #including
2. #formats
3. #dolby
4. #digital
5. #higher
6. #better
7. #truehd
8. #analog
9. #difference
10. #biggest
11. #pretty
12. #resolution
13. #master
14. #optical
15. #cables
16. #device
17. #found
18. #another
19. #cheap
20. #audio
21. #white