This may be a stupid question, but I'm stuck at work on the night shift and I'm tired... I currently have just one TV in my house, hooked up to a 722. I occasionally have all three tuners (2 sat / 1 OTA) in use. I see people on here mention the 813 for use with 3+ TV's. Could the 813 be used in my setup, utilizing 3 sat tuners + 1 OTA tuner? Occasionally I have to get a show online due to all my tuners being used, and even 1 extra would help. I'm not concerned about the monthly cost, and this box may even tempt me to add a second TV in the bedroom with a 110, giving me an additional OTA tuner. Like other posters, I have my wife and two sons to record shows for, and I watch mine when they are in bed. More tuners = better!
Also, I see people talk about diplexing OTA and cable internet. Does that mean that the coax cable can carry the OTA, cable internet AND sat signals?