Burning in of static image on screen of Plasma TV?

I went in to ask questions at RC Willey where I have credit and told the salesman what I thought I wanted (plasma HDTV) and told him that I wanted to use it with my computer also. He said there was one problem that occurs with plasma TV's and I wanted your knowledge on this this. He said that a static image will burn into the screen, for example you have a heart on the screen for six hours playing a game and stuff will stay afterwards. He gave an example of a daughter that watched regular TV broadcast of Nicklodian without re-sizing to full screen and the black band at the top stood out after 3 months. So whats do you know about this? and his recommendation was The Sony with the Gorilla glass if your familiar with that one instead


Samsung PN51D7000 51 Inch 1080p 600Hz 3D Plasma HDTV with PN51D7000, BDD5500 3D Blu Ray Player, 2 SSG-3050GB 3D Glasses, Xtreme 6 ft 1.4v HDMI Cables (x3), and TV Screen Cleaning Solution



46" LED NX720 Internet TV
KDL-46NX720
Features: Full HD 1080p in 2D and 3D, Monolithic Design, OptiContrast Panel, Corning Gorilla Glass, Edge LED, X-Reality Engine, Internet TV for streaming entertainment, built-in Wi-Fi

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