I spent some time googling this a couple of months ago.
It seems the HDMI-protocoll suffers from lack of (good) error correction:
http://episteme.arstechnica.com/eve/forums/a/tpc/f/67909965/m/450005880831?r=363006290831
For short distances the signal is perfect, but with lack of good error correction the signal will rapidly be corrupted after some distance:
http://www.bluejeanscable.com/articles/dvihdmicomponent.htm
So, if it's short distance I guess HDMI. Long distance - a good shielded Coax.
It seems the HDMI-protocoll suffers from lack of (good) error correction:
http://episteme.arstechnica.com/eve/forums/a/tpc/f/67909965/m/450005880831?r=363006290831
For short distances the signal is perfect, but with lack of good error correction the signal will rapidly be corrupted after some distance:
http://www.bluejeanscable.com/articles/dvihdmicomponent.htm
So, if it's short distance I guess HDMI. Long distance - a good shielded Coax.