If you are anywhere near a Video Only, I would urge you to give them a try.
http://www.videoonly.com/I haven't purchased from them, but a friend of mine has purchased from them a 55" Panasonic plasma, a 58" Samsung plasma, then recently a 70" Sharp LCD (edge-lit LED), and now he is exchanging the Sharp (for full credit) with a Panasonic 65" plasma. The friend says they are knowledgeable and their prices are as good as and often better than Amazon.
About the TVs themselves, I have watched many football games and movies on his TVs. The 55" Panasonic was my favorite. The Samsung, even after careful calibration, I thought was inferior to the Panasonic picture. He went with the Sharp LCD for reduced energy consumption and heat, but after three weeks neither of us got used to the reduced contrast and reduced viewing angle of LCD. There were generally no problems with motion, but he did point out one motion problem that I was able to see (I forgot what he called it). He was on the fence for the past week, but the final straw was when the TV started spontaneously re-booting sporadically. So he went back to Video Only and found the 65" Panasonic plasma, and he is even getting money back on the deal.