Don't know how accurate Amazon's product listings are, but they show the "Real Black Panel" as a feature on ALL of their 2012 plasma lineup - with only the E8000 also having a "Clear Image Panel."
Gee - seems like a Clear Image ought to be a requirement for ANY HDTV!
In fact - again, JUST looking at the Amazon chart - there does not appear to be a whole lot to distinguish between any of the top 4 2012 Samsung plasmas.
FWIW, saw a blurb on the E550 that stated: "Another feature is the Real Black Filter for "blacker" blacks, which was a standard on previous premium line TVs."
(from
www.pn60e550.com )