I chose a Plasma TV as I can't stand the motion blurring with the LCD TV's. I also like the other things that you mentioned. Burn In is not the issue it once was, most all of the plasma sets now use various image shifting techniques to all but eliminate it. Although if you watch a lot of news shows with the banners at the bottom, over a long period of time, then you might see something. As James said.. they do radiate a noticeable amount of heat. They were about the equivalent of a 200w light bulb. The manufacturers have done some things to reduce power consumption and they can now meet Energy Efficiency standards, but they do so at the expense of brightness. The other issues are, some screens are highly reflective and that can be annoying in a brightly lit room as you will see the room, windows, people reflected on the screen. Also, on rare occasions, there is a high pitch squeal that comes from the TV, it seems to be background dependent. On mine it seems to happen when the screen is more than 98% pure white. There are about 3 static images that do it on my set. It is not loud, I hear it, my wife does not, some brands/models are worse than others.
HTH