I have two generic 1080p LCD's and a Samsung PN50B650 1080p Plasma
The LCD's are 42", 46", and my Plasma is a 50"
Obviously the two generic LCD's aren't going to have an amazing image compared to something like a Sony Bravia or Samsung model, but they're pretty awesome for the price I paid for them
My 50" Plasma is awesome as well, I've only got about 120 hours on it so far, and I use it as a secondary monitor on my PC (DVI>HDMI), and I watch TV on it via my TV Tuner Card (ATSC & NTSC)
I still haven't quite gotten my settings perfected for the plasma but the out-of-the-box image quality is top notch, it's just annoying to see my 24" LCD (1920x1200) sitting next to it and thinking that the LCD is a better screen because it always looks a bit better than my plasma.
That's until I realize the dot pitch on the LCD is vastly superior to a 50" Plasma (24" 19x12 LCD has 2,304,000 pixels, 50" 19x10 Plasma has 2,073,600 larger pixels, which gives the impression that it's image quality is lower than the LCD)
Blacks are better on my plasma though, and ...........no motion blur! Playing games on the Plasma looks more realistic than on my LCD