Hey folks, first of all, I'd like to thank anyone for their help in advance.

I've had some strange issue with my Blu-ray picture ever since I bought my new TV (51” Class Plasma 5300 Series TV. Model No. PN51F5300AFXZA)
I have been using a PS4/PS3 for Blu-ray video playback in 1080p
and my previous TV, a 37" Toshiba only capable of 720p, never had this issue.

For one, the blacks in certain movies are terrible. There is what I can only explain as grainy white fuzz in some, if not most black tones. At times it almost looks as if the grainy white fuzz creates a grid in the background of the dark tones.

Anyways, this happens to a range of movies, from old to brand new. Some movies, for example, 'The Life of Pi' looks completely flawless. (I'm aware that some movies are shot differently.) I'll give some examples of movies just to illustrate the varying dates of the movies in question.

Gangs of New York - "fuzzy" dark tones
Adaptation -"fuzzy" darks/gridlike white distortion
Teenage Mutant Ninja Turtles (Live Action) - Terrible dark tones, white spots popping up everywhere, gridlike distortion over black tones
The Hobbit - Mostly flawless
Man of Steel - Terrible muddy blacks with same white distortion. Very disappointed in picture quality (a friend of mine said his looked great)

I understand that TMNT was old and isn't the best example but something like Man of Steel should look pretty damn good.

Netflix runs and looks beautiful in 1080p on both Playstations.
My HD Comcast cable looks very good as well, excellent on some channels.
Videogames, of course, look great as well.

Does anybody have any suggestions for me? If not, can anyone explain why it looks like this even if it can't be helped?

Again, thanks to all in advance.
(If it's a **** TV, just say so)