We are using HDMI in two locations for our productions: 1) We are using consumer grade monitors at locations that don't require color grading or critical monitoring and AJA HD-SDI to HDMI converters. These converters work fairly well except that one needs to open them up to change some settings for the right color space and audio conversions. 2) We have a few sources that only output HDMI such as blu-ray players, computers, document cameras, etc. We have tried three different HDMI/DVI to HD-SDI converters with inconsistent results. And the HDMI signal almost always goes away if you try to route or distribute the signal to multiple destinations, even if all are display devices. We have found that most equipment does not handle the keys (i.e., the number of keys) properly, even if well planned. The HDMI standard certainly presents some challenges both so does its physical architecture. In my opinion, the HDMI cable, even if converted to UTP, is too complicated and expensive compared to the simplicity of the BNC on coaxial cable. It would be difficult to convince me to go a different route unless it was necessary to comply with newer, better picture standards. Dan