Why always? It's situational, and there are situations were a plasma is just not ideal.
I think both technologies have a place in the home and office. I also think they are both great to a point and both have advantages and disadvantages in certain environments and type of use they will be used for..
I'm sure if you read what I said in this thread I answer your questions..
http://forums.overclockers.co.uk/showthread.php?t=18285901
