Roger,
Our only HDTV is a rear-projection 1080p Mitsubishi, 55". It is old, circa 2001, and doesn't support HDMI or any of the new-fangled imputs.
But, it has low power consumption, and it still looks great in our home theater area which is in our basement, therefore dark all the time.
If I were going to replace that TV tomorrow, I would do so with a DLP-based system, because I don't need a TV in that room that can hang on the wall. Would look COOL, but I can get 20% more picture for almost 1/2 less the price by going with DLP rather than LCD.
I wouldn't get plasma as it has simply become the betamax of HD.
That leaves LCD. I'd get an LCD if I were going to hang on the wall, or put along a wall in a tight, bright room. However, if not needing to hang on the wall, and putting in or having placed around the TV some large wall unit, then again, I suggest DLP for the price.
For the money, I think the Mitsubish DLPs are still about the best deal in HD.
Regards,
TJR