AVR as sound card via HDMI

Hi all. I believe that this is the best options of what I have available as the DACs inside of my computers are so so at best and are subject to so much interference. Let me know if this is untrue.

With this solution in mind How would I go about determining which of my AVR's has the best DAC. I have Pioneer Elite, Onkyo TX-SRs, Sony DH series.

What are your opinions on the various manufacturers?