Questions about burn-in (this one is a bit different)

[jeff92k7]

Okay, I know there have been hundreds of posts about burn-in (image retention) and I have read through as much as I could stand. It's very clear that half the world thinks burn-in is a problem while the other half thinks it won't ever happen to modern TVs. Frankly, I don't really care who is right or not but I imagine the truth is somewhere in the middle.

That said, I still want to be cautious about it when I get my new plasma TV but I certainly can't wait 100 hours before watching it. After all, it's supposed to be delivered on Friday and the Daytona 500 is on Sunday so there's no way I could get 100 hours of "break-in" before then.

I have heard mentioned in some of those burn-in threads that CRT technologies were more prone to burn-in than plasma but no one has backed that up with any detailed explanation as to why that would be or any links to more information about it. Thus my question...

What is more prone to burn-in and why?

CRT direct view (traditional TV sets)
CRT rear projection
Plasma flat-panel

I am not referring to temporary image retention. I am asking about full-fledged permanent burn-in.

I am retiring a six year old CRT rear projection TV that was supposed to be prone to burn-in (I read all the same arguments years ago) and we never had any issue with it at all. Ever. Just curious if it was more prone to burn-in, then I shouldn't have anything to worry about with plasma.