I have a great Sony Home Theater system to go with my 55'Sony 4K Ultra HD TV, but the system is old and the old receiver doesn't work the best with 4K and 3D movie sound. Because our system is old, we also have a Rocketfish universal wireless rear speaker kit, so that I don't have to run wires all over the room. The Rocketfish unit died on me. I can replace it, but I also need to replace the receiver at some point with a newer one. Before I did either, I wanted to see what my best options are for the money? The Rocketfish unit is about $100 to replace, and another receiver is around $200. I also have a Sony Blue Ray and want to keep all Sony products. This isn't my specialty, so I always appreciate help from the board.