Went to Circuit City to look at hdtv's and was really impressed by the 51s500. It looked like it had about the best picture of all the the rear projection units there. Anyone have any opinions on the 51s500 or hitachi in general? What about a mitsubishi, I guees circuit city doesn't carry them? Anyone suggest a mitsubishi unit that is comprabable to the 51s500 in price and picture quality.