Plasma has the better picture, there is no doubt about that. I prefer LCD becuase of the various sizes, what i use if for, and the low power consumption (about 1/3rd less than Plasmas).
Not to mention that plasmas use a glossy surface for their screens, which cause glare. Great for DARK rooms, not so great for bright roooms. Also, the viewing angle is much better, but how many people are going to watch a TV 170 degrees above or from the side? You couldnt see the damn TV anyhow.