The HR20 is a great machine in many regards. However, the OTA tuner is very weak in my opinion based upon using other OTA tuners on other equipment using the same antenna setup. Can the HR20 tuner be improved through software updates or is this a hardware issue? Additionally, is there a diffrence in the tuning ability between the HR20-700 and the HR20-100. I am looking forward to some lively discussion regarding this issue.