Well, the G20 isn't 3D capable, I'm not into 3D, so I wouldn't be utilizing that part of the Oppo. However, I've read in other forums that someone had done this, run one HDMI cable to the receiver for audio while running one HDMI cable to the TV for video, and stated that they swear they had a better audio reproduction. Now, they also stated they couldn't back that up with any kind of data driven qualifiers, so they did say it could have been a placebo effect. I'm just trying to maximize the potential of the Oppo within my own personal set-up. Considering I do not do 3D, would you think I should just run HDMI direct to the Onkyo and then out to the Plasma as I have been already? My sound reproduction is great with it that way, I'm just wondering if this is an option that I could use since the Oppo has two HDMI outs.