I am about to switch to Direct TV from Dish. I have 3 HD TVs and one SD. So I would get one MRV, 2 HD recievers and 1 SD receiver. If I am recording can I still watch live TV on all of the TVs? In other words if I am recording one show or two shows will I be able to watch live TV on all of my sets at the same time? Sorry if this has been asked before. Thanks.