Plasma suffers screen burn when its used with static images (like scores at the top of most games).
If you want flatscreen LCD would be your best bet, but if you dont need a set with less than 20" of depth I would advise getting a RPTV based on either DLP or LCOS (Sony calls it SXRD, and JVC calls it HD-ILA).
The RPTV's can be less expensive at bigger sizes than flatscreen LCD's.
another thing with plasma is that after about 60,000 hours of use the light output is cut in half. but heh if you dont watch much tv who cares that will be a very long time before that happens
now with rptvs they have bulbs that cost around $200-400. and need to be replaced every so often usually around 6000 hours of use.
rptvs are also very cheap now. you can get a 50" 1080p model for around $1,500.
their usually lcd, or dlp. allot of people like dlp but you need to demo it first for about 2 hours, some people a small percentage can see a rainbow with dlp, sometimes its not evident till you bring it home.
now also with lcd rptv the sde (screen door effect) is more noticible but if your seating about 1.5x the distance of the screen you probably wont even notice it.
http://en.wikipedia.org/wiki/Screen_door_effect
in my case i demoed about 20 different tv's and a freind had recently bought a tv and done the same so i cut out the ones he said where garbage.
and for my money the sony xbr1 was the best choice second was the pioneer pro-fhd1 but i couldnt afford it and im glad didnt buy it. for 7 grand i could get a 1080p sony pearl projector with a nice stewart screen.
http://www.pioneerelectronics.com/pna/v3/pg/product/details/0,,2076_310069731_290043890,00.html
btw i suggest whatever tv's your looking at getting that you post it here first so we can give you the nay or yay //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif some tv's have problems like the westinghouse 1080p models that have motion blurr problems. and theirs a couple with banding issues