Here's another option to consider:
Samsung HL-S5087W 50" 1080p DLP HDTV If you click "buy from online vendor" and go to amazon they have it listed for 1848.99.
Although
this article is about projectors I'm guessing a lot of the points can be applied to the TV's . Here's
another article explaining the technology. My aunt bought one (maybe a different model) and apparently her son-in-law researched tv's for a while and found this to be the best option.