I have a 50" plasma at about 9', which is the recommended distance. I think you would want at least 60" if you are 12' away - do a google search and look up recommended viewing distances. At any rate, as big as you can afford. I can't believe how much difference there is - so much easier on the eyes.
And yes, plasma is WAY better than LCD for sports or movies - they have much better blacks, which makes all the color better.
And yes, plasma is WAY better than LCD for sports or movies - they have much better blacks, which makes all the color better.