Yet another question I'm afraid... Still toying between the Hitachi and Panny sets, but was wondering exactly what contrast ratio is all about. The Hitachi appears to have a ratio of 1000:1, compared to Pannys 10,000:1, and my current set's 3000:1. How much of a difference do all these numbers make in real terms. Does it refer purely to brightness, or is that the panel luminance? Confused is an understatement, so answers in terms an idiot can understand please!