[quote name='gunm']As mentioned, it's all a matter of personal preference.
If you're concerned about backlight/lamp life, the DLP has the shortest time in-between replacement of the three you listed. The average rating varies a lot depending on usage and other factors, but 1000-2000 hours is appropriate. If you get a DLP, you're looking at changing bulbs every one to two years.
I chose LCD because they generally use less power, generate less heat, and have excellent life expectancy compared to the two. Plasmas have improved in lifespan, power, and heat output considerably over the years, but are still beaten by a good LCD in those areas, though plasma does still offer better picture overall.[/quote]
Hit the nail on the head. Decide what's most important to you. Although an LCD is right for me based on other factors, it should be noted that DLPs have the best screen size / price ratio.