I completely agree with the original poster. Plasma's image quality is so much better than LCD (and DLP) that there is hardly even a discussion. Colors are so much more vivid, contrast is so much better, blacks. If you want that "looking through a window" experience, then plasma is the only option.
Not to say that LCDs don't have their place, though. Airport monitors, business presentation screens, and that sort of a thing is better with LCD because of the image retention/burn-in issues with static images. In a HT though, it's either plasma, or front projection for bigger sizes.