My personal soap box is that anything you buy will not only be good, it will be very good. It will far surpass anything you have now, and you'll love it. As far as quibbling between competing technologies I think that it sort of goes like this
Plasma - If money is no object and/or you want to hang on wall like a picture.
DLP - For screen sizes >= 50 inches.
LCD - For screen sizes < 50 inches.
But like I said, it's all good. Don't fall victim to analysis paralysis. I've had a DLP for 2 years and love it.
Thanks.
Your point is good.