Go see them first hand
I favor the LCD Projectors...the Sony is great. The Hitachi and Panasonics are also very nice.
DLP...I dont know, its "too good to be true" for me. We have several on the sales floor and the clarity doesnt seem on par with the LCD Projectors. Others, looking at the same thing, swear it is.
The JVC version seems to be the best variant of DLP Ive seen.
The Samsungs also seem to be the best of the bunch. But, every Samsung item Ive owned has failed, fried or thrown fits within 30 days of warranties ending. I'm not testing my karma with a $2000+ tv.
Check Epinions.Com as well.
The biggest thing is the right size screen for your room. A 60" prjection screen is max overkill if you are less than 10 feet away (wholly pixelation, Batman!). The Sony LCD projectors come in nice sizes, 42, 50 and 55 I think