I guess I usually do not use an HDMI out from a video card because I am a gamer. Most high end gaming hardware does not have an HDMI out port. Now a lot of the mid-range cards do - but those are often below the range I would buy for a gaming card.
Also a higher end video card will give you better video playback than a mid-range card, so that is another reason why I prefer the high end to the media range.
That said I do not claim to be an audio expert. I kinda came here more looking for help, than to help, but I know a lot about pc hardware.