Gents,
Without the ability to decode Blu Ray's Lossless Codes via HDMI in the Z9, perhaps John will be able to use analogue connections and have his Oppo 230 do the heavy lifting. I don't know for sure if this is possible (HDMI and some codecs are all about anti-piracy and kills some flexibility) but it's worth a look. Perhaps another Oppo owner can chime in.
Maybe then John will have the best of both worlds. Just a thought...