I've yet to decent a decent Black Level on an LED. They still champion the "burn-in" on Plasmas and those days are long gone.
Mmmmm, I see it every day.
I agree with about the "burn in" on plasmas, those days ARE long gone.
However!, I have a 55" Samsung LED hanging on the wall in the same room as a 60 some odd inch Samsung plasma.
Standing in front of both, you'd be real hard pressed to see any difference in "black" levels.
Of course there are "instruments" for measuring the differences in black levels and contrast ratios, BUT those differences for the most part cannot be seen by the human eye.
Kinda like the 120 vs. 240 refresh rate myth.
If I calibrated 2 tvs, 1 with 120 and 1 with 240 hz. I'd bet you could not tell me which one was which.
The same holds true for the LED vs Plasma "black" levels.
The average Joe cannot tell the difference.
But if you're talking a 60 refresh rate, now there you will see quite a difference between 60 and 120.