Plasma/LCD TVs while gaming, pros/cons

Okay it's like this, I've heard many times from different people that LCDs are for gaming and that Plasmas are bad for gaming.
But I feel that most people who actually say this don't actually know shit about HD TVs and just say it because other people told them and because of the potential burn in issue, (which I heard you only really need to be cautious with the first 100 hours). I could've agreed with this a few years ago when the technology was still new and that Plasma TVs had an apparent lag while playing games, but today I'm just not sure about it.
Personally, when I've spoke with people who've got lots of experience with TVs I've generally heard better things about Plasmas then LCDs (with better black levels/contrast, better with non-HD signal) .

So is there someone who could enlighten me on this subject? How good are Plasmas and LCDs for gaming today, both with HD and non-HD signal?

Jam it back in, in the dark.