Like several others, I also dipped my toe into HD discs with the PS3 (the 60 GB when the price recently dropped). Video goes via HDMI directly to the Samsung 50", audio to the 990 with its own "PS3" setting via the digital connection, which I play with the 7-channel DSP setting. Also, Netflix supplies all the software. Since I can't really integrate it into the MX-700 controller my wife doesn't feel comfortable playing her disks by herself, so I help out.
So far it's done just fine as a HD disc player, and someday I'll get the time to play Oblivion IV;-)
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Onkyo 886, Outlaw 7100, LFM-1
Allison Ones F/R
Gallo Nucleus Micros surrounds
Outlaw LCR center
Oppo OPDV971H DVD
LiteOn 5005 DVD recorder
SA 8300HD/DVR STB
Dual 1219 phono
Ion Tape2PC USB
Harmony 620
Samsung HLR5078W