I just noticed a feature of the 612 that the 722 does not have and I really like it. If you are watching a show and then midway through the show decide to record it, when you choose "record entire event" the 612 automatically records using Tuner 2 instead of the tuner you are currently viewing. This allows me to switch channels on the TV instead of being forced to watch the rest of the show on that TV. Is this a difference in the receivers or is there some option to do this on the 722 also?