240hz panels are definitely upselling because 120hz has not yet been perfected. I have looked and looked at many different panels in many different settings and had many people who buy and install TVs for a living advise me. I am no professional by any means (I'm a geologist so my specialty lies almost entirely with rocks).
My apologies for not reading your link. I like Gizmodo, however they are still subjective human beings. Our eyes can't differentiate between 100 000:1 and 100000000000:1 contrast ratios. Hell, the 700:1 monitor I am typing this on is nearly indistinguishable from the 100 000:1 monitor I have at home. I know for a fact that all my life I have liked pepsi better than coke, so when I was given coke and they said it was pepsi and vice versa, I liked the coke better...
The original question was if anyone had issues with plasma, I will leave this thread here. I have had no issues with my plasma, it has never burned in (no videogames though, but still probably wouldn't be an issue) and I provided info I uncovered during a three-month search for my new main-floor television.