I use a Gefen Toolbox 8x8 HDMI matrix with good results. However, I use a separate multizone audio receiver/amps to drive the sound in several rooms and dedicated AVRs in the others. All my tvs are 1080p, so that solves the lowest common denominator issue from the display-resolution perspective. With respect to audio, I just set the EDID in the Gefen HDMI matrix to support all of the HD audio formats. That way, the AVRs get the HD audio streams. The rest of the zones are fed audio through the multizone audio receiver and ceiling speakers (the TVs in the secondary zones aren't used for the audio), so again I don't need to deal with the lowest-common denominator issue with respect to audio.
I use a separate Xantech IR distribution system for infrared control.
Let me know if this doesn't make sense... I was thinking of re-doing my system diagram anyway.
Edit: Updated to include system diagram.
I use a separate Xantech IR distribution system for infrared control.
Let me know if this doesn't make sense... I was thinking of re-doing my system diagram anyway.
Edit: Updated to include system diagram.