Flat LCDs are extremely popular in all screen sizes these days, thanks to competitive pricing and the fact they can fit just about anywhere. Larger LCDs–as high as 65 inches–remain more expensive than plasma and rear-projection models, but in the popular 40- to 42-inch size range, LCD prices have dropped precipitously. As of spring 2007, flat-panel LCDs in this size range can be had for...