What ever you do, don't just buy the plasma on price. Always buy from an authorized reseller. There are more than enough delivery horror stories that should convince you. Visual Apex is a good one, my friend got his Panny 7UY from there.

You also want to make sure you have manufacturer's warranty, which you won't get from an unauthorized source. Not all extended warranties are created equal, so don't always count on it being the same as the manufacturer's.