I am trying to help a friend that has DTV. DTV will give her up to $100 credit on her bill when she buys a new receiver. I called for her because she has a 6 yo receiver and needs to update to a receiver with digital sound to hook up to her surround sound system. I have E* myself so I know nothing about the DTV receivers. She wants nothing more... no Tivo or anything. What receiver would she be able to get from BestBuy or Circuit City?