Manta-
You listed them in the order of my preference.
As far as your DVD player, the audio will sound best through the coax or toslink, not the HDMI. Your Bluray player will however sound best when playing the high-rez formats (and only make sound)through the HDMI. If your watching a bluray with only standard DTS/DD soundtracks it may be worthwhile to A/B with a Toslink/Coax and see which sounds the best to you.
You listed them in the order of my preference.
As far as your DVD player, the audio will sound best through the coax or toslink, not the HDMI. Your Bluray player will however sound best when playing the high-rez formats (and only make sound)through the HDMI. If your watching a bluray with only standard DTS/DD soundtracks it may be worthwhile to A/B with a Toslink/Coax and see which sounds the best to you.