I recently bought a 37'' Panasonic Plasma TV and after it was delivered I noticed a 3'' scratch on the lower right hand portion of the screen. The scratch doesn't appear to be very deep and is not visible when the TV is on. I called the company I purchased the TV from and they offered me $600 to keep the TV as is. Is this scratch going to cause problems over time? It currently is not noticeable when the TV is on. Should I be concerned about any long-term effects of this scratch? Is it worth giving away $600 price decrease to get a new item delivered?