Most of the discussion I see for screen size centers around how big and and what distance you sit from the screen. I want a screen size that shows a persons head at about a 1:1 ratio when the camera is at about 5 foot close up. That seems about the distance from the camera for casual conversation for sitcoms. I know that you wouldn't get a 1:1 ratio for anything else. But I would like it when I'm watching seinfeld and there sitting at the coffe table talking that the size of their heads look about the size they should be in real life. Just guessing here but I'm thinking around a 40 inch screen. Whats your thoughts on it?