After an earlier thread I started here, and a good deal of reading, I was strongly leaning toward the Toshiba 42H81. However, looking around at Sears I see that the 50H81 isn't too much higher of a price for what seems like a good deal more screen real estate. Are the 50H81 and the 42H81 equivalent in quality and features? Is the 50H81 worth the extra $300-400? Also, Sears was pushing their 5 year maintenance contract for ~$500. She seemed a bit vague on what specifically is done under this contract. Is it worth considering?