Is it better to connect Soundbar with HDMI or Optical?

Related questions

1. Can I use speaker wire to make RCA cables?
2. Do I need a HDMI switch or splitter?
3. How far can you run RCA cable?
4. Can you connect a subwoofer to an amplifier?
5. Are RCA and AV cables the same?
6. What does LFE on a subwoofer mean?
7. Is there a difference between HDMI and HDMI ARC?
8. What is an LFE cable?
9. Is there an adapter for optical audio to RCA?
10. Is RCA audio digital or analog?

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