I just had my Sony 61HS10 replaces with a mitsubishi widescreen set. They told me they were going to replace the Sony with a WS 65615, but after they delivered it, I discovered it was a WS 65515. Can anyone tell me what the diffference is? According to the website, the 615 has EDF lenses, ColorPure filters and QuadField focus. All the other specs looked the same. Should I raise a big fuss about this? I verified that they said 65615 when they told me they were replacing my Sony. Is the 615 much better than the 515? It is a hassle to have to replace it. Thanks in advance.