A:Answer I'd say no, given that it is only 24 more dimming zones for a TV with 25% more screen space. There are no other differences with the 75" to 65". I would base your decision on viewing distance and what fits the space, rather than the dimming zones. If you are too close, then the 75" will look worse than the 65". Minimum viewing distance for a 65" tv is about 8', and 75" is about 10'. Best of luck!