hi i am new here and looking to get a 75'' samsung tv the 6400 or 8000 which is going too give me the best picture quality . I will be playing bluerays movies 60% and gameing 20% and cable 20%. Now can you see a big different in this Micro Dimming Ultimate and Precision Black Local Dimming. these are the only two tv sets that i will buy 75 f6400 or 75 f8000. thanks guys for any input.