My LCD RPTV.
I really like the picture but like most LCD TVs, there is black crush. Some people are very picky about black crush but it doesn't really bother me that much. There are mods you can make to the TV which substantially improve the black levels but I haven't tried them out.
I tried to be an educated consumer and did a lot of research in stores and at forums like AVS forum before making my decision. The current crop of DLPs are very nice but a year ago, I didn't see too many good competitively priced DLPs. In fact, my ex-boss has a Samsung from last year and it looks horrible, even after I tweaked it for him. The new ones like the Samsung "Captain Kirk" look beautiful.
Although there are a lot of LCD haters out there, I think it all depends on your taste. I would just go by your eyes and wallet and forget about contrast ratios, lumens, etc.
FWIW, I bought my Panasonic 50LC13 last year for $2400. I've heard you can negotiate on the newer 50LC14 for about $2000. A 50" DLP will cost you closer to $3000. Also, by year end or early next year the new crop of LCDs with the new LCD panel from Epson will come out significantly improved contrast ratio. If you decide to buy a big screen TV, I would recommend an extended warranty. I got hosed on my $2700 Sony after it broke within 2 years and was left with nothing. My Panasonic started acting up around the 1 year mark but I have some piece of mind for the next 4 years with my extended warranty.
If you need more info, PM just be warned I am an anti-Sony fanboi.
