While I agree with the rest, I must say that in one point you are wrong. Opus is better than AAC-LC. It spans a much wider spectrum of bitrates and it sounds go

While I agree with the rest, I must say that in one point you are wrong. Opus is better than AAC-LC. It spans a much wider spectrum of bitrates and it sounds good¹ at any of those. On top Opus is open source which AAC-LC is not afaik. --- ¹ good is subjective, I earn my money as a freelance audio engineer, so I should have the ears to notice anything wrong with it.