I'm not going to say whether or not my TV does better blacks than some other TV, because I just don't know.
What I do know is that seated on my couch, in a room with the lights either on or off, the TV produces a very deep, solid black. It is not gray, it is not banded, it is simply black. The absence of color.
It does go very gray if you look at it from an odd angle, like standing very close and looking down. It also goes a little gray when I stretch out on the love seat, which is positioned a little left of the sofa.