The current plasmas have much less burn-in problems. Certainly marathon gaming may cause some image retention, but that goes away when you switch from the gaming. The Pannys have a "Screen wipe" that helps out as well.
One thing to consider is a commercial version of the Panny plasmas. They do not have a tuner (if you are hooked up to a cable or satellite box, they will be your tuner) and there are no speakers (again, hooked up to your sound system). Handsome savings when you don't need to pay for redundant tuner/speakers.
I have a 42" commercial plasma in the great room above the fireplace and I'm very happy with it. If you get one, you will need a wall mount (Peerless model for around $100)
Some models to consider:
> TH-42PH9UK ($1,025 plus shipping)
> TH-50PH9UK ($1,695 plus shipping)
The above are prices from Visual Apex. They and New Egg (similar prices) have integrity and Customer Service that equals Axiom. I got my Panny from New Egg and the transaction was simple.
AVS has some extensive info on these models in the Plasma forum.
