LCD would be better. I'm not sure if its any more an issue, but Earlier plasma's "stained" with stationary images that were on the screen long enough - I.E. Game HUD, or something like that. I beleive LCD TV's solved this because it refreshes every few minutes by clearing the screen every few hours?
The only 1080p Plasma I know of is the Pioneer 5000EX, it's supposed to be amazing as a TV with HD and SD signals. It's probably the best quality screen you can buy but for games I don't know. Oh and it costs the earth too =(. Does it have to be plasma?
you probably want a plasma because the black levels and colors look really amazing compared to the horrible contrast of an lcd. I'm right there with you and have been looking for a plasma that is compatible with my pc and haven't found an affordable one yet. your best bet would be try to find an LCD with LED backlighting.