Hi I have received some dubious advice relating to the tuner for the Panasonic plasma: 1. If the tuner is not used its not possible to connect different sources to the RGC Component and SVideo inputs - supposedly the screen will be blank. 2. The picture on the plasma will be better if the tuner is used, rather than directly connected to the plasma (RGB or SVIdeo) Can any one tell me if this is just myth to entice me to by the tuner box as well? Does anyone have good experience with the progressive scan tuners on the market?